Home / 205,874.76-284,284.49-129,521.13

Finding the Fourth Proportional to 205,874.76, 284,284.49 and 129,521.13

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Solution

The fourth proportional to 205,874.76, 284,284.49 and 129,521.13 is: 178,850.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,874.76 : 284,284.49 = 129,521.13 : x
  2. Step 2: Convert to fraction form
    205,874.76/284,284.49 = 129,521.13/x
  3. Step 3: Cross multiply
    205,874.76x = 284,284.49 × 129,521.13
  4. Step 4: Simplify right side
    205,874.76x = 36,820,846,672.60
  5. Step 5: Solve for x
    x = 36,820,846,672.60/205,874.76
  6. Step 6: Final answer
    x = 178,850.71

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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.