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Finding the Third Proportional to 87,600 and 135,486

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Solution

The third proportional to 87,600 and 135,486 is: 209,548.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,600 : 135,486 = 135,486 : x
  2. Step 2: Convert to fraction form
    87,600/135,486 = 135,486/x
  3. Step 3: Cross multiply
    87,600x = 135,486 × 135,486
  4. Step 4: Simplify right side
    87,600x = 18,356,456,196
  5. Step 5: Solve for x
    x = 18,356,456,196/87,600
  6. Step 6: Final answer
    x = 209,548.59

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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.