Home / 120,480.21-166,258.17-66,763.85

Finding the Fourth Proportional to 120,480.21, 166,258.17 and 66,763.85

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Solution

The fourth proportional to 120,480.21, 166,258.17 and 66,763.85 is: 92,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,480.21 : 166,258.17 = 66,763.85 : x
  2. Step 2: Convert to fraction form
    120,480.21/166,258.17 = 66,763.85/x
  3. Step 3: Cross multiply
    120,480.21x = 166,258.17 × 66,763.85
  4. Step 4: Simplify right side
    120,480.21x = 11,100,034,691.86
  5. Step 5: Solve for x
    x = 11,100,034,691.86/120,480.21
  6. Step 6: Final answer
    x = 92,131.60

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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.