Home / 205,909.20-284,053.44-129,521.04

Finding the Fourth Proportional to 205,909.20, 284,053.44 and 129,521.04

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Solution

The fourth proportional to 205,909.20, 284,053.44 and 129,521.04 is: 178,675.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,909.20 : 284,053.44 = 129,521.04 : x
  2. Step 2: Convert to fraction form
    205,909.20/284,053.44 = 129,521.04/x
  3. Step 3: Cross multiply
    205,909.20x = 284,053.44 × 129,521.04
  4. Step 4: Simplify right side
    205,909.20x = 36,790,896,964.38
  5. Step 5: Solve for x
    x = 36,790,896,964.38/205,909.20
  6. Step 6: Final answer
    x = 178,675.34

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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.