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Finding the Fourth Proportional to 120,903.44, 166,843.37 and 67,185.86

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Solution

The fourth proportional to 120,903.44, 166,843.37 and 67,185.86 is: 92,714.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,903.44 : 166,843.37 = 67,185.86 : x
  2. Step 2: Convert to fraction form
    120,903.44/166,843.37 = 67,185.86/x
  3. Step 3: Cross multiply
    120,903.44x = 166,843.37 × 67,185.86
  4. Step 4: Simplify right side
    120,903.44x = 11,209,515,298.75
  5. Step 5: Solve for x
    x = 11,209,515,298.75/120,903.44
  6. Step 6: Final answer
    x = 92,714.61

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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.