Home / 205,711.72-284,057.38-129,358.59

Finding the Fourth Proportional to 205,711.72, 284,057.38 and 129,358.59

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Solution

The fourth proportional to 205,711.72, 284,057.38 and 129,358.59 is: 178,625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,711.72 : 284,057.38 = 129,358.59 : x
  2. Step 2: Convert to fraction form
    205,711.72/284,057.38 = 129,358.59/x
  3. Step 3: Cross multiply
    205,711.72x = 284,057.38 × 129,358.59
  4. Step 4: Simplify right side
    205,711.72x = 36,745,261,252.38
  5. Step 5: Solve for x
    x = 36,745,261,252.38/205,711.72
  6. Step 6: Final answer
    x = 178,625.03

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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.