Home / 87,133.14-120,311.46-66,958.20

Finding the Fourth Proportional to 87,133.14, 120,311.46 and 66,958.20

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Solution

The fourth proportional to 87,133.14, 120,311.46 and 66,958.20 is: 92,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,133.14 : 120,311.46 = 66,958.20 : x
  2. Step 2: Convert to fraction form
    87,133.14/120,311.46 = 66,958.20/x
  3. Step 3: Cross multiply
    87,133.14x = 120,311.46 × 66,958.20
  4. Step 4: Simplify right side
    87,133.14x = 8,055,838,800.97
  5. Step 5: Solve for x
    x = 8,055,838,800.97/87,133.14
  6. Step 6: Final answer
    x = 92,454.36

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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.