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Finding the Fourth Proportional to 159,793.71, 220,508.87 and 88,172.80

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Solution

The fourth proportional to 159,793.71, 220,508.87 and 88,172.80 is: 121,674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,793.71 : 220,508.87 = 88,172.80 : x
  2. Step 2: Convert to fraction form
    159,793.71/220,508.87 = 88,172.80/x
  3. Step 3: Cross multiply
    159,793.71x = 220,508.87 × 88,172.80
  4. Step 4: Simplify right side
    159,793.71x = 19,442,884,713.17
  5. Step 5: Solve for x
    x = 19,442,884,713.17/159,793.71
  6. Step 6: Final answer
    x = 121,674.91

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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.