Home / 132,348.28-198,506.00-78,345.09

Finding the Fourth Proportional to 132,348.28, 198,506.00 and 78,345.09

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Solution

The fourth proportional to 132,348.28, 198,506.00 and 78,345.09 is: 117,507.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,348.28 : 198,506.00 = 78,345.09 : x
  2. Step 2: Convert to fraction form
    132,348.28/198,506.00 = 78,345.09/x
  3. Step 3: Cross multiply
    132,348.28x = 198,506.00 × 78,345.09
  4. Step 4: Simplify right side
    132,348.28x = 15,551,971,375.80
  5. Step 5: Solve for x
    x = 15,551,971,375.80/132,348.28
  6. Step 6: Final answer
    x = 117,507.92

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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.