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Finding the Fourth Proportional to 138,463.13, 207,676.24 and 38,614.96

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Solution

The fourth proportional to 138,463.13, 207,676.24 and 38,614.96 is: 57,917.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,463.13 : 207,676.24 = 38,614.96 : x
  2. Step 2: Convert to fraction form
    138,463.13/207,676.24 = 38,614.96/x
  3. Step 3: Cross multiply
    138,463.13x = 207,676.24 × 38,614.96
  4. Step 4: Simplify right side
    138,463.13x = 8,019,409,700.55
  5. Step 5: Solve for x
    x = 8,019,409,700.55/138,463.13
  6. Step 6: Final answer
    x = 57,917.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.