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Finding the Fourth Proportional to 96,410.80, 144,470.40 and 81,539.20

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Solution

The fourth proportional to 96,410.80, 144,470.40 and 81,539.20 is: 122,185.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,410.80 : 144,470.40 = 81,539.20 : x
  2. Step 2: Convert to fraction form
    96,410.80/144,470.40 = 81,539.20/x
  3. Step 3: Cross multiply
    96,410.80x = 144,470.40 × 81,539.20
  4. Step 4: Simplify right side
    96,410.80x = 11,780,000,839.68
  5. Step 5: Solve for x
    x = 11,780,000,839.68/96,410.80
  6. Step 6: Final answer
    x = 122,185.49

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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.