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Finding the Third Proportional to 87,018.75 and 138,463.88

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Solution

The third proportional to 87,018.75 and 138,463.88 is: 220,323.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,018.75 : 138,463.88 = 138,463.88 : x
  2. Step 2: Convert to fraction form
    87,018.75/138,463.88 = 138,463.88/x
  3. Step 3: Cross multiply
    87,018.75x = 138,463.88 × 138,463.88
  4. Step 4: Simplify right side
    87,018.75x = 19,172,244,680.02
  5. Step 5: Solve for x
    x = 19,172,244,680.02/87,018.75
  6. Step 6: Final answer
    x = 220,323.15

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.