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Finding the Fourth Proportional to 96,660.80, 145,336.80 and 81,454.40

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Solution

The fourth proportional to 96,660.80, 145,336.80 and 81,454.40 is: 122,472.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,660.80 : 145,336.80 = 81,454.40 : x
  2. Step 2: Convert to fraction form
    96,660.80/145,336.80 = 81,454.40/x
  3. Step 3: Cross multiply
    96,660.80x = 145,336.80 × 81,454.40
  4. Step 4: Simplify right side
    96,660.80x = 11,838,321,841.92
  5. Step 5: Solve for x
    x = 11,838,321,841.92/96,660.80
  6. Step 6: Final answer
    x = 122,472.83

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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.