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Finding the Third Proportional to 120,980 and 181,591

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Solution

The third proportional to 120,980 and 181,591 is: 272,568.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,980 : 181,591 = 181,591 : x
  2. Step 2: Convert to fraction form
    120,980/181,591 = 181,591/x
  3. Step 3: Cross multiply
    120,980x = 181,591 × 181,591
  4. Step 4: Simplify right side
    120,980x = 32,975,291,281
  5. Step 5: Solve for x
    x = 32,975,291,281/120,980
  6. Step 6: Final answer
    x = 272,568.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.