Home / 88,039.20-131,856.30-72,292.80

Finding the Fourth Proportional to 88,039.20, 131,856.30 and 72,292.80

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Solution

The fourth proportional to 88,039.20, 131,856.30 and 72,292.80 is: 108,272.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,039.20 : 131,856.30 = 72,292.80 : x
  2. Step 2: Convert to fraction form
    88,039.20/131,856.30 = 72,292.80/x
  3. Step 3: Cross multiply
    88,039.20x = 131,856.30 × 72,292.80
  4. Step 4: Simplify right side
    88,039.20x = 9,532,261,124.64
  5. Step 5: Solve for x
    x = 9,532,261,124.64/88,039.20
  6. Step 6: Final answer
    x = 108,272.92

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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.