Home / 87,081.56-120,197.39-51,292.20

Finding the Fourth Proportional to 87,081.56, 120,197.39 and 51,292.20

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Solution

The fourth proportional to 87,081.56, 120,197.39 and 51,292.20 is: 70,797.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,081.56 : 120,197.39 = 51,292.20 : x
  2. Step 2: Convert to fraction form
    87,081.56/120,197.39 = 51,292.20/x
  3. Step 3: Cross multiply
    87,081.56x = 120,197.39 × 51,292.20
  4. Step 4: Simplify right side
    87,081.56x = 6,165,188,567.36
  5. Step 5: Solve for x
    x = 6,165,188,567.36/87,081.56
  6. Step 6: Final answer
    x = 70,797.87

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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.