Can you zoom a projector?

I want to install a 110" screen for a 19x19 room, but would like to be able to zoom that to a 92" screen when i have more people over who will have to sit closer to the screen. Is it possible to zoom a projector to accomplish this without sacrificing quality? Brand suggestions? Thanks
nobody will want it smaller but yes my unit ca go from probably 60in to over 120in if Iplay with it.
Go search a Projector Calculator and enter model you intend to use and you also need to know how far you intend to throw the imaage and it will show you not only that it can be done but also what level of lights you can run in room.