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Finding the Third Proportional to 87,843 and 138,957

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Solution

The third proportional to 87,843 and 138,957 is: 219,813.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,843 : 138,957 = 138,957 : x
  2. Step 2: Convert to fraction form
    87,843/138,957 = 138,957/x
  3. Step 3: Cross multiply
    87,843x = 138,957 × 138,957
  4. Step 4: Simplify right side
    87,843x = 19,309,047,849
  5. Step 5: Solve for x
    x = 19,309,047,849/87,843
  6. Step 6: Final answer
    x = 219,813.16

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.