Home / 87,720.57-131,394.56-84,651.48

Finding the Fourth Proportional to 87,720.57, 131,394.56 and 84,651.48

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Solution

The fourth proportional to 87,720.57, 131,394.56 and 84,651.48 is: 126,797.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,720.57 : 131,394.56 = 84,651.48 : x
  2. Step 2: Convert to fraction form
    87,720.57/131,394.56 = 84,651.48/x
  3. Step 3: Cross multiply
    87,720.57x = 131,394.56 × 84,651.48
  4. Step 4: Simplify right side
    87,720.57x = 11,122,743,544.69
  5. Step 5: Solve for x
    x = 11,122,743,544.69/87,720.57
  6. Step 6: Final answer
    x = 126,797.44

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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.