Home / 206,350.05-284,642.10-129,747.72

Finding the Fourth Proportional to 206,350.05, 284,642.10 and 129,747.72

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Solution

The fourth proportional to 206,350.05, 284,642.10 and 129,747.72 is: 178,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,350.05 : 284,642.10 = 129,747.72 : x
  2. Step 2: Convert to fraction form
    206,350.05/284,642.10 = 129,747.72/x
  3. Step 3: Cross multiply
    206,350.05x = 284,642.10 × 129,747.72
  4. Step 4: Simplify right side
    206,350.05x = 36,931,663,491.01
  5. Step 5: Solve for x
    x = 36,931,663,491.01/206,350.05
  6. Step 6: Final answer
    x = 178,975.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.