Home / 87,530.40-131,449.20-84,765.60

Finding the Fourth Proportional to 87,530.40, 131,449.20 and 84,765.60

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Solution

The fourth proportional to 87,530.40, 131,449.20 and 84,765.60 is: 127,297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,530.40 : 131,449.20 = 84,765.60 : x
  2. Step 2: Convert to fraction form
    87,530.40/131,449.20 = 84,765.60/x
  3. Step 3: Cross multiply
    87,530.40x = 131,449.20 × 84,765.60
  4. Step 4: Simplify right side
    87,530.40x = 11,142,370,307.52
  5. Step 5: Solve for x
    x = 11,142,370,307.52/87,530.40
  6. Step 6: Final answer
    x = 127,297.15

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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.