Home / 207,877.20-311,998.05-123,531.90

Finding the Fourth Proportional to 207,877.20, 311,998.05 and 123,531.90

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Solution

The fourth proportional to 207,877.20, 311,998.05 and 123,531.90 is: 185,406.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,877.20 : 311,998.05 = 123,531.90 : x
  2. Step 2: Convert to fraction form
    207,877.20/311,998.05 = 123,531.90/x
  3. Step 3: Cross multiply
    207,877.20x = 311,998.05 × 123,531.90
  4. Step 4: Simplify right side
    207,877.20x = 38,541,711,912.80
  5. Step 5: Solve for x
    x = 38,541,711,912.80/207,877.20
  6. Step 6: Final answer
    x = 185,406.15

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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.