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Finding the Fourth Proportional to 80,110.97, 120,156.02 and 20,951.20

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Solution

The fourth proportional to 80,110.97, 120,156.02 and 20,951.20 is: 31,424.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,110.97 : 120,156.02 = 20,951.20 : x
  2. Step 2: Convert to fraction form
    80,110.97/120,156.02 = 20,951.20/x
  3. Step 3: Cross multiply
    80,110.97x = 120,156.02 × 20,951.20
  4. Step 4: Simplify right side
    80,110.97x = 2,517,412,100.69
  5. Step 5: Solve for x
    x = 2,517,412,100.69/80,110.97
  6. Step 6: Final answer
    x = 31,424.06

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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.