The compression figures you give show problems on all cylinders. The one with 110 is horrible and all of the others are going downhill.
At that point what should have been done is to run a wet compression test and find out if the piston rings had anything to do with this.
If a piston ring problem exists this is generally caused by improper break-in when new, irregular oil changes, overheating episodes, etc.
Did you buy this vehicle brand new, as in 4 or 5 miles on it and has there been any of the above bad influences involved with the engine?