Home / 205,713.03-284,059.20-129,359.90

Finding the Fourth Proportional to 205,713.03, 284,059.20 and 129,359.90

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Solution

The fourth proportional to 205,713.03, 284,059.20 and 129,359.90 is: 178,626.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,713.03 : 284,059.20 = 129,359.90 : x
  2. Step 2: Convert to fraction form
    205,713.03/284,059.20 = 129,359.90/x
  3. Step 3: Cross multiply
    205,713.03x = 284,059.20 × 129,359.90
  4. Step 4: Simplify right side
    205,713.03x = 36,745,868,285.78
  5. Step 5: Solve for x
    x = 36,745,868,285.78/205,713.03
  6. Step 6: Final answer
    x = 178,626.84

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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.