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Finding the Third Proportional to 87,624 and 135,930

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Solution

The third proportional to 87,624 and 135,930 is: 210,866.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,624 : 135,930 = 135,930 : x
  2. Step 2: Convert to fraction form
    87,624/135,930 = 135,930/x
  3. Step 3: Cross multiply
    87,624x = 135,930 × 135,930
  4. Step 4: Simplify right side
    87,624x = 18,476,964,900
  5. Step 5: Solve for x
    x = 18,476,964,900/87,624
  6. Step 6: Final answer
    x = 210,866.49

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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.