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Finding the Fourth Proportional to 133,081.92, 198,144.96 and 131,221.92

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Solution

The fourth proportional to 133,081.92, 198,144.96 and 131,221.92 is: 195,375.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,081.92 : 198,144.96 = 131,221.92 : x
  2. Step 2: Convert to fraction form
    133,081.92/198,144.96 = 131,221.92/x
  3. Step 3: Cross multiply
    133,081.92x = 198,144.96 × 131,221.92
  4. Step 4: Simplify right side
    133,081.92x = 26,000,962,089.52
  5. Step 5: Solve for x
    x = 26,000,962,089.52/133,081.92
  6. Step 6: Final answer
    x = 195,375.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.