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Finding the Fourth Proportional to 91,843.20, 137,764.80 and 60,350.40

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Solution

The fourth proportional to 91,843.20, 137,764.80 and 60,350.40 is: 90,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,843.20 : 137,764.80 = 60,350.40 : x
  2. Step 2: Convert to fraction form
    91,843.20/137,764.80 = 60,350.40/x
  3. Step 3: Cross multiply
    91,843.20x = 137,764.80 × 60,350.40
  4. Step 4: Simplify right side
    91,843.20x = 8,314,160,785.92
  5. Step 5: Solve for x
    x = 8,314,160,785.92/91,843.20
  6. Step 6: Final answer
    x = 90,525.60

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Similar ratio
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1.5x scale

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.