Home / 206,849.28-285,469.20-121,982.88

Finding the Fourth Proportional to 206,849.28, 285,469.20 and 121,982.88

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Solution

The fourth proportional to 206,849.28, 285,469.20 and 121,982.88 is: 168,346.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,849.28 : 285,469.20 = 121,982.88 : x
  2. Step 2: Convert to fraction form
    206,849.28/285,469.20 = 121,982.88/x
  3. Step 3: Cross multiply
    206,849.28x = 285,469.20 × 121,982.88
  4. Step 4: Simplify right side
    206,849.28x = 34,822,355,167.30
  5. Step 5: Solve for x
    x = 34,822,355,167.30/206,849.28
  6. Step 6: Final answer
    x = 168,346.51

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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.