Portland, Oregon is 7.6 times larger than Erie, Pennsylvania.
Area: 50 km2 calculated
Erie is a city located in northwestern Pennsylvania, United States. Named for the lake and the Native American tribe that resided along its southern shore, Erie is the state's fourth-largest city, with a population of 102,000. Wikipedia
Area: 376 km2 calculated
Portland is the largest city by population in the U.S. state of Oregon, near the confluence of the Willamette and Columbia rivers. Wikipedia