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Finding the Third Proportional to 87,307 and 129,324

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Solution

The third proportional to 87,307 and 129,324 is: 191,561.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,307 : 129,324 = 129,324 : x
  2. Step 2: Convert to fraction form
    87,307/129,324 = 129,324/x
  3. Step 3: Cross multiply
    87,307x = 129,324 × 129,324
  4. Step 4: Simplify right side
    87,307x = 16,724,696,976
  5. Step 5: Solve for x
    x = 16,724,696,976/87,307
  6. Step 6: Final answer
    x = 191,561.92

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.