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Finding the Fourth Proportional to 158,489.49, 218,737.92 and 98,079.61

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Solution

The fourth proportional to 158,489.49, 218,737.92 and 98,079.61 is: 135,363.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,489.49 : 218,737.92 = 98,079.61 : x
  2. Step 2: Convert to fraction form
    158,489.49/218,737.92 = 98,079.61/x
  3. Step 3: Cross multiply
    158,489.49x = 218,737.92 × 98,079.61
  4. Step 4: Simplify right side
    158,489.49x = 21,453,729,565.20
  5. Step 5: Solve for x
    x = 21,453,729,565.20/158,489.49
  6. Step 6: Final answer
    x = 135,363.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.