A 90-year-old woman and four dogs were rescued yesterday from a fire that ripped through three homes in Queens.

Fifteen firefighters suffered dehydration, smoke inhalation and exhaustion battling the four-alarm blaze, which began at about 5:10 p.m. on the backyard deck of a home on 112th Street in Jamaica and quickly spread to the roof and two adjoining buildings.

It took 170 firefighters 90 minutes to bring the flames under control.

The rescued woman was treated at the scene for minor injuries.

The cause of the fire was not immediately clear.