Home / 206,400.40-284,717.22-129,890.94

Finding the Fourth Proportional to 206,400.40, 284,717.22 and 129,890.94

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Solution

The fourth proportional to 206,400.40, 284,717.22 and 129,890.94 is: 179,176.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,400.40 : 284,717.22 = 129,890.94 : x
  2. Step 2: Convert to fraction form
    206,400.40/284,717.22 = 129,890.94/x
  3. Step 3: Cross multiply
    206,400.40x = 284,717.22 × 129,890.94
  4. Step 4: Simplify right side
    206,400.40x = 36,982,187,339.99
  5. Step 5: Solve for x
    x = 36,982,187,339.99/206,400.40
  6. Step 6: Final answer
    x = 179,176.92

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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.