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Finding the Third Proportional to 61,165.13 and 129,681

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Solution

The third proportional to 61,165.13 and 129,681 is: 274,946.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,165.13 : 129,681 = 129,681 : x
  2. Step 2: Convert to fraction form
    61,165.13/129,681 = 129,681/x
  3. Step 3: Cross multiply
    61,165.13x = 129,681 × 129,681
  4. Step 4: Simplify right side
    61,165.13x = 16,817,161,761
  5. Step 5: Solve for x
    x = 16,817,161,761/61,165.13
  6. Step 6: Final answer
    x = 274,946.90

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.