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Finding the Fourth Proportional to 159,061.73, 219,505.14 and 87,446.39

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Solution

The fourth proportional to 159,061.73, 219,505.14 and 87,446.39 is: 120,675.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,061.73 : 219,505.14 = 87,446.39 : x
  2. Step 2: Convert to fraction form
    159,061.73/219,505.14 = 87,446.39/x
  3. Step 3: Cross multiply
    159,061.73x = 219,505.14 × 87,446.39
  4. Step 4: Simplify right side
    159,061.73x = 19,194,930,981.92
  5. Step 5: Solve for x
    x = 19,194,930,981.92/159,061.73
  6. Step 6: Final answer
    x = 120,675.99

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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.