Home / 198,789.39-297,993.33-86,358.15

Finding the Fourth Proportional to 198,789.39, 297,993.33 and 86,358.15

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Solution

The fourth proportional to 198,789.39, 297,993.33 and 86,358.15 is: 129,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,789.39 : 297,993.33 = 86,358.15 : x
  2. Step 2: Convert to fraction form
    198,789.39/297,993.33 = 86,358.15/x
  3. Step 3: Cross multiply
    198,789.39x = 297,993.33 × 86,358.15
  4. Step 4: Simplify right side
    198,789.39x = 25,734,152,691.14
  5. Step 5: Solve for x
    x = 25,734,152,691.14/198,789.39
  6. Step 6: Final answer
    x = 129,454.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.