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Finding the Fourth Proportional to 80,112.52, 120,175.64 and 20,948.10

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Solution

The fourth proportional to 80,112.52, 120,175.64 and 20,948.10 is: 31,423.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,112.52 : 120,175.64 = 20,948.10 : x
  2. Step 2: Convert to fraction form
    80,112.52/120,175.64 = 20,948.10/x
  3. Step 3: Cross multiply
    80,112.52x = 120,175.64 × 20,948.10
  4. Step 4: Simplify right side
    80,112.52x = 2,517,451,324.28
  5. Step 5: Solve for x
    x = 2,517,451,324.28/80,112.52
  6. Step 6: Final answer
    x = 31,423.94

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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.