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Finding the Fourth Proportional to 159,841.92, 220,614.12 and 91,906.42

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Solution

The fourth proportional to 159,841.92, 220,614.12 and 91,906.42 is: 126,849.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,841.92 : 220,614.12 = 91,906.42 : x
  2. Step 2: Convert to fraction form
    159,841.92/220,614.12 = 91,906.42/x
  3. Step 3: Cross multiply
    159,841.92x = 220,614.12 × 91,906.42
  4. Step 4: Simplify right side
    159,841.92x = 20,275,853,970.65
  5. Step 5: Solve for x
    x = 20,275,853,970.65/159,841.92
  6. Step 6: Final answer
    x = 126,849.41

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1.5x scale

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.