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Finding the Fourth Proportional to 96,213.20, 144,028.20 and 72,690.80

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Solution

The fourth proportional to 96,213.20, 144,028.20 and 72,690.80 is: 108,815.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,213.20 : 144,028.20 = 72,690.80 : x
  2. Step 2: Convert to fraction form
    96,213.20/144,028.20 = 72,690.80/x
  3. Step 3: Cross multiply
    96,213.20x = 144,028.20 × 72,690.80
  4. Step 4: Simplify right side
    96,213.20x = 10,469,525,080.56
  5. Step 5: Solve for x
    x = 10,469,525,080.56/96,213.20
  6. Step 6: Final answer
    x = 108,815.89

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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.