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Finding the Third Proportional to 87,499 and 135,744

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Solution

The third proportional to 87,499 and 135,744 is: 210,590.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,499 : 135,744 = 135,744 : x
  2. Step 2: Convert to fraction form
    87,499/135,744 = 135,744/x
  3. Step 3: Cross multiply
    87,499x = 135,744 × 135,744
  4. Step 4: Simplify right side
    87,499x = 18,426,433,536
  5. Step 5: Solve for x
    x = 18,426,433,536/87,499
  6. Step 6: Final answer
    x = 210,590.22

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.