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Finding the Fourth Proportional to 159,877.71, 220,631.31 and 88,257.87

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Solution

The fourth proportional to 159,877.71, 220,631.31 and 88,257.87 is: 121,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,877.71 : 220,631.31 = 88,257.87 : x
  2. Step 2: Convert to fraction form
    159,877.71/220,631.31 = 88,257.87/x
  3. Step 3: Cross multiply
    159,877.71x = 220,631.31 × 88,257.87
  4. Step 4: Simplify right side
    159,877.71x = 19,472,449,475.91
  5. Step 5: Solve for x
    x = 19,472,449,475.91/159,877.71
  6. Step 6: Final answer
    x = 121,795.90

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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.