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Finding the Fourth Proportional to 98,651.20, 147,987.60 and 95,540.80

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Solution

The fourth proportional to 98,651.20, 147,987.60 and 95,540.80 is: 143,321.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,651.20 : 147,987.60 = 95,540.80 : x
  2. Step 2: Convert to fraction form
    98,651.20/147,987.60 = 95,540.80/x
  3. Step 3: Cross multiply
    98,651.20x = 147,987.60 × 95,540.80
  4. Step 4: Simplify right side
    98,651.20x = 14,138,853,694.08
  5. Step 5: Solve for x
    x = 14,138,853,694.08/98,651.20
  6. Step 6: Final answer
    x = 143,321.66

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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.