Home / 87,629.20-131,443.80-86,851.60

Finding the Fourth Proportional to 87,629.20, 131,443.80 and 86,851.60

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Solution

The fourth proportional to 87,629.20, 131,443.80 and 86,851.60 is: 130,277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.20 : 131,443.80 = 86,851.60 : x
  2. Step 2: Convert to fraction form
    87,629.20/131,443.80 = 86,851.60/x
  3. Step 3: Cross multiply
    87,629.20x = 131,443.80 × 86,851.60
  4. Step 4: Simplify right side
    87,629.20x = 11,416,104,340.08
  5. Step 5: Solve for x
    x = 11,416,104,340.08/87,629.20
  6. Step 6: Final answer
    x = 130,277.40

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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.