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Finding the Fourth Proportional to 159,711.02, 239,725.04 and 84,831.78

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Solution

The fourth proportional to 159,711.02, 239,725.04 and 84,831.78 is: 127,331.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,711.02 : 239,725.04 = 84,831.78 : x
  2. Step 2: Convert to fraction form
    159,711.02/239,725.04 = 84,831.78/x
  3. Step 3: Cross multiply
    159,711.02x = 239,725.04 × 84,831.78
  4. Step 4: Simplify right side
    159,711.02x = 20,336,301,429.61
  5. Step 5: Solve for x
    x = 20,336,301,429.61/159,711.02
  6. Step 6: Final answer
    x = 127,331.87

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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.