Home / 88,339.20-132,314.40-78,489.60

Finding the Fourth Proportional to 88,339.20, 132,314.40 and 78,489.60

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Solution

The fourth proportional to 88,339.20, 132,314.40 and 78,489.60 is: 117,561.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,339.20 : 132,314.40 = 78,489.60 : x
  2. Step 2: Convert to fraction form
    88,339.20/132,314.40 = 78,489.60/x
  3. Step 3: Cross multiply
    88,339.20x = 132,314.40 × 78,489.60
  4. Step 4: Simplify right side
    88,339.20x = 10,385,304,330.24
  5. Step 5: Solve for x
    x = 10,385,304,330.24/88,339.20
  6. Step 6: Final answer
    x = 117,561.68

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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.