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Finding the Fourth Proportional to 267,093.80, 400,640.70 and 80,105.30

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Solution

The fourth proportional to 267,093.80, 400,640.70 and 80,105.30 is: 120,157.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,093.80 : 400,640.70 = 80,105.30 : x
  2. Step 2: Convert to fraction form
    267,093.80/400,640.70 = 80,105.30/x
  3. Step 3: Cross multiply
    267,093.80x = 400,640.70 × 80,105.30
  4. Step 4: Simplify right side
    267,093.80x = 32,093,443,465.71
  5. Step 5: Solve for x
    x = 32,093,443,465.71/267,093.80
  6. Step 6: Final answer
    x = 120,157.95

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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.