Home / 132,488.11-198,481.84-78,291.14

Finding the Fourth Proportional to 132,488.11, 198,481.84 and 78,291.14

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Solution

The fourth proportional to 132,488.11, 198,481.84 and 78,291.14 is: 117,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,488.11 : 198,481.84 = 78,291.14 : x
  2. Step 2: Convert to fraction form
    132,488.11/198,481.84 = 78,291.14/x
  3. Step 3: Cross multiply
    132,488.11x = 198,481.84 × 78,291.14
  4. Step 4: Simplify right side
    132,488.11x = 15,539,368,334.76
  5. Step 5: Solve for x
    x = 15,539,368,334.76/132,488.11
  6. Step 6: Final answer
    x = 117,288.78

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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.