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Finding the Third Proportional to 87,747.38 and 128,330.19

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Solution

The third proportional to 87,747.38 and 128,330.19 is: 187,682.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,747.38 : 128,330.19 = 128,330.19 : x
  2. Step 2: Convert to fraction form
    87,747.38/128,330.19 = 128,330.19/x
  3. Step 3: Cross multiply
    87,747.38x = 128,330.19 × 128,330.19
  4. Step 4: Simplify right side
    87,747.38x = 16,468,637,023.79
  5. Step 5: Solve for x
    x = 16,468,637,023.79/87,747.38
  6. Step 6: Final answer
    x = 187,682.39

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.