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Finding the Fourth Proportional to 96,221.20, 144,040.20 and 72,698.80

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Solution

The fourth proportional to 96,221.20, 144,040.20 and 72,698.80 is: 108,827.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,221.20 : 144,040.20 = 72,698.80 : x
  2. Step 2: Convert to fraction form
    96,221.20/144,040.20 = 72,698.80/x
  3. Step 3: Cross multiply
    96,221.20x = 144,040.20 × 72,698.80
  4. Step 4: Simplify right side
    96,221.20x = 10,471,549,691.76
  5. Step 5: Solve for x
    x = 10,471,549,691.76/96,221.20
  6. Step 6: Final answer
    x = 108,827.89

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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.