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Finding the Fourth Proportional to 159,884.40, 239,711.40 and 89,785.20

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Solution

The fourth proportional to 159,884.40, 239,711.40 and 89,785.20 is: 134,613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,884.40 : 239,711.40 = 89,785.20 : x
  2. Step 2: Convert to fraction form
    159,884.40/239,711.40 = 89,785.20/x
  3. Step 3: Cross multiply
    159,884.40x = 239,711.40 × 89,785.20
  4. Step 4: Simplify right side
    159,884.40x = 21,522,535,991.28
  5. Step 5: Solve for x
    x = 21,522,535,991.28/159,884.40
  6. Step 6: Final answer
    x = 134,613.11

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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.