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Finding the Fourth Proportional to 159,438.74, 239,187.53 and 65,951.78

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Solution

The fourth proportional to 159,438.74, 239,187.53 and 65,951.78 is: 98,939.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,438.74 : 239,187.53 = 65,951.78 : x
  2. Step 2: Convert to fraction form
    159,438.74/239,187.53 = 65,951.78/x
  3. Step 3: Cross multiply
    159,438.74x = 239,187.53 × 65,951.78
  4. Step 4: Simplify right side
    159,438.74x = 15,774,841,831.61
  5. Step 5: Solve for x
    x = 15,774,841,831.61/159,438.74
  6. Step 6: Final answer
    x = 98,939.83

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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.