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Finding the Third Proportional to 87,372 and 131,888

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Solution

The third proportional to 87,372 and 131,888 is: 199,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,372 : 131,888 = 131,888 : x
  2. Step 2: Convert to fraction form
    87,372/131,888 = 131,888/x
  3. Step 3: Cross multiply
    87,372x = 131,888 × 131,888
  4. Step 4: Simplify right side
    87,372x = 17,394,444,544
  5. Step 5: Solve for x
    x = 17,394,444,544/87,372
  6. Step 6: Final answer
    x = 199,084.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.