Home / 206,538.14-285,204.38-129,146.42

Finding the Fourth Proportional to 206,538.14, 285,204.38 and 129,146.42

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Solution

The fourth proportional to 206,538.14, 285,204.38 and 129,146.42 is: 178,335.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,538.14 : 285,204.38 = 129,146.42 : x
  2. Step 2: Convert to fraction form
    206,538.14/285,204.38 = 129,146.42/x
  3. Step 3: Cross multiply
    206,538.14x = 285,204.38 × 129,146.42
  4. Step 4: Simplify right side
    206,538.14x = 36,833,123,542.16
  5. Step 5: Solve for x
    x = 36,833,123,542.16/206,538.14
  6. Step 6: Final answer
    x = 178,335.70

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1.5x scale

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.