Home / 88,140.32-131,915.28-72,344.80

Finding the Fourth Proportional to 88,140.32, 131,915.28 and 72,344.80

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Solution

The fourth proportional to 88,140.32, 131,915.28 and 72,344.80 is: 108,274.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,140.32 : 131,915.28 = 72,344.80 : x
  2. Step 2: Convert to fraction form
    88,140.32/131,915.28 = 72,344.80/x
  3. Step 3: Cross multiply
    88,140.32x = 131,915.28 × 72,344.80
  4. Step 4: Simplify right side
    88,140.32x = 9,543,384,548.54
  5. Step 5: Solve for x
    x = 9,543,384,548.54/88,140.32
  6. Step 6: Final answer
    x = 108,274.90

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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.