Home / 120,517.20-166,315.41-66,074.48

Finding the Fourth Proportional to 120,517.20, 166,315.41 and 66,074.48

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Solution

The fourth proportional to 120,517.20, 166,315.41 and 66,074.48 is: 91,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,517.20 : 166,315.41 = 66,074.48 : x
  2. Step 2: Convert to fraction form
    120,517.20/166,315.41 = 66,074.48/x
  3. Step 3: Cross multiply
    120,517.20x = 166,315.41 × 66,074.48
  4. Step 4: Simplify right side
    120,517.20x = 10,989,204,959.37
  5. Step 5: Solve for x
    x = 10,989,204,959.37/120,517.20
  6. Step 6: Final answer
    x = 91,183.71

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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.