Fort Wayne, Indiana is 3.7 times larger than Ann Arbor, Michigan.
Area: 77 km2 calculated
Ann Arbor is a city in the US state of Michigan and the county seat of Washtenaw County. The 2010 census recorded its population to be 113,934, making it the sixth largest city in Michigan. Wikipedia
Area: 287 km2 calculated
Fort Wayne is a city in the U.S. state of Indiana and the county seat of Allen County. The population was 256,496 as of the 2013 Census estimate making it the 76th largest city in the United States and the second largest in Indiana after Indianapolis. Wikipedia