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Finding the Fourth Proportional to 80,101.76, 120,139.98 and 26,793.32

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Solution

The fourth proportional to 80,101.76, 120,139.98 and 26,793.32 is: 40,185.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,101.76 : 120,139.98 = 26,793.32 : x
  2. Step 2: Convert to fraction form
    80,101.76/120,139.98 = 26,793.32/x
  3. Step 3: Cross multiply
    80,101.76x = 120,139.98 × 26,793.32
  4. Step 4: Simplify right side
    80,101.76x = 3,218,948,928.93
  5. Step 5: Solve for x
    x = 3,218,948,928.93/80,101.76
  6. Step 6: Final answer
    x = 40,185.75

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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.