Mongolia is about 172 times bigger than Puerto Rico.

Puerto Rico is approximately 9,104 sq km, while Mongolia is approximately 1,564,116 sq km, making Mongolia 17,081% larger than Puerto Rico. Meanwhile, the population of Puerto Rico is ~3.1 million people (129,440 more people live in Mongolia).
Tip: This to-scale comparison of Puerto Rico vs. Mongolia uses the Mercator projection, which distorts the size of regions near the poles.
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