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Finding the Fourth Proportional to 159,496.40, 239,129.40 and 89,397.20

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Solution

The fourth proportional to 159,496.40, 239,129.40 and 89,397.20 is: 134,031.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,496.40 : 239,129.40 = 89,397.20 : x
  2. Step 2: Convert to fraction form
    159,496.40/239,129.40 = 89,397.20/x
  3. Step 3: Cross multiply
    159,496.40x = 239,129.40 × 89,397.20
  4. Step 4: Simplify right side
    159,496.40x = 21,377,498,797.68
  5. Step 5: Solve for x
    x = 21,377,498,797.68/159,496.40
  6. Step 6: Final answer
    x = 134,031.23

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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.