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Finding the Fourth Proportional to 123,081.29, 169,787.08 and 84,774.95

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Solution

The fourth proportional to 123,081.29, 169,787.08 and 84,774.95 is: 116,944.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,081.29 : 169,787.08 = 84,774.95 : x
  2. Step 2: Convert to fraction form
    123,081.29/169,787.08 = 84,774.95/x
  3. Step 3: Cross multiply
    123,081.29x = 169,787.08 × 84,774.95
  4. Step 4: Simplify right side
    123,081.29x = 14,393,690,793.47
  5. Step 5: Solve for x
    x = 14,393,690,793.47/123,081.29
  6. Step 6: Final answer
    x = 116,944.59

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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.