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Finding the Fourth Proportional to 120,481.86, 166,257.45 and 66,763.74

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Solution

The fourth proportional to 120,481.86, 166,257.45 and 66,763.74 is: 92,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,481.86 : 166,257.45 = 66,763.74 : x
  2. Step 2: Convert to fraction form
    120,481.86/166,257.45 = 66,763.74/x
  3. Step 3: Cross multiply
    120,481.86x = 166,257.45 × 66,763.74
  4. Step 4: Simplify right side
    120,481.86x = 11,099,969,164.86
  5. Step 5: Solve for x
    x = 11,099,969,164.86/120,481.86
  6. Step 6: Final answer
    x = 92,129.80

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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.