Home / 132,619.20-198,637.20-115,123.20

Finding the Fourth Proportional to 132,619.20, 198,637.20 and 115,123.20

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Solution

The fourth proportional to 132,619.20, 198,637.20 and 115,123.20 is: 172,431.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,619.20 : 198,637.20 = 115,123.20 : x
  2. Step 2: Convert to fraction form
    132,619.20/198,637.20 = 115,123.20/x
  3. Step 3: Cross multiply
    132,619.20x = 198,637.20 × 115,123.20
  4. Step 4: Simplify right side
    132,619.20x = 22,867,750,103.04
  5. Step 5: Solve for x
    x = 22,867,750,103.04/132,619.20
  6. Step 6: Final answer
    x = 172,431.67

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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.