Home / 87,131.14-120,308.70-66,956.20

Finding the Fourth Proportional to 87,131.14, 120,308.70 and 66,956.20

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Solution

The fourth proportional to 87,131.14, 120,308.70 and 66,956.20 is: 92,451.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,131.14 : 120,308.70 = 66,956.20 : x
  2. Step 2: Convert to fraction form
    87,131.14/120,308.70 = 66,956.20/x
  3. Step 3: Cross multiply
    87,131.14x = 120,308.70 × 66,956.20
  4. Step 4: Simplify right side
    87,131.14x = 8,055,413,378.94
  5. Step 5: Solve for x
    x = 8,055,413,378.94/87,131.14
  6. Step 6: Final answer
    x = 92,451.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.