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Finding the Fourth Proportional to 80,998.80, 121,498.20 and 75,093.90

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Solution

The fourth proportional to 80,998.80, 121,498.20 and 75,093.90 is: 112,640.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,998.80 : 121,498.20 = 75,093.90 : x
  2. Step 2: Convert to fraction form
    80,998.80/121,498.20 = 75,093.90/x
  3. Step 3: Cross multiply
    80,998.80x = 121,498.20 × 75,093.90
  4. Step 4: Simplify right side
    80,998.80x = 9,123,773,680.98
  5. Step 5: Solve for x
    x = 9,123,773,680.98/80,998.80
  6. Step 6: Final answer
    x = 112,640.85

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1.5x scale

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.