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Finding the Fourth Proportional to 131,062.38, 180,866.15 and 74,473.75

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Solution

The fourth proportional to 131,062.38, 180,866.15 and 74,473.75 is: 102,773.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,062.38 : 180,866.15 = 74,473.75 : x
  2. Step 2: Convert to fraction form
    131,062.38/180,866.15 = 74,473.75/x
  3. Step 3: Cross multiply
    131,062.38x = 180,866.15 × 74,473.75
  4. Step 4: Simplify right side
    131,062.38x = 13,469,780,438.56
  5. Step 5: Solve for x
    x = 13,469,780,438.56/131,062.38
  6. Step 6: Final answer
    x = 102,773.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.