Meteor apps with apache

I have 3 meteor apps with virtual host ports :90,91,93.
All working
I would like to publish all on the same port 80. For example:
<VirtualHost *:80>

ProxyPass /rap http://localhost:93/
ProxyPassReverse /rap http://localhost:93/

ProxyPass /question http://localhost:90/
ProxyPassReverse /question http://localhost:90/

How can i do that?

Are you looking for a load balancer? You can’t forward one public port to three private ports

No, but it’s possible with public ip address to public these three applications?

Have you checked that you have these apache modules installed?

mod_proxy
mod_proxy_http
mod_ssl

Yes, all enable
mod_proxy
mod_proxy_http
mod_ssl

I haven’t tested, but this looks like it should work then.
Are you getting any errors?
What is it showing you when you go to /rap?