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Finding the Fourth Proportional to 159,691, 239,466.96 and 45,813.68

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Solution

The fourth proportional to 159,691, 239,466.96 and 45,813.68 is: 68,700.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,691 : 239,466.96 = 45,813.68 : x
  2. Step 2: Convert to fraction form
    159,691/239,466.96 = 45,813.68/x
  3. Step 3: Cross multiply
    159,691x = 239,466.96 × 45,813.68
  4. Step 4: Simplify right side
    159,691x = 10,970,862,446.94
  5. Step 5: Solve for x
    x = 10,970,862,446.94/159,691
  6. Step 6: Final answer
    x = 68,700.57

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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.