Home / 87,143.31-120,255.44-49,416.75

Finding the Fourth Proportional to 87,143.31, 120,255.44 and 49,416.75

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Solution

The fourth proportional to 87,143.31, 120,255.44 and 49,416.75 is: 68,193.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,143.31 : 120,255.44 = 49,416.75 : x
  2. Step 2: Convert to fraction form
    87,143.31/120,255.44 = 49,416.75/x
  3. Step 3: Cross multiply
    87,143.31x = 120,255.44 × 49,416.75
  4. Step 4: Simplify right side
    87,143.31x = 5,942,632,767.54
  5. Step 5: Solve for x
    x = 5,942,632,767.54/87,143.31
  6. Step 6: Final answer
    x = 68,193.79

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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.