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Finding the Fourth Proportional to 120,841.37, 166,761 and 67,131.39

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Solution

The fourth proportional to 120,841.37, 166,761 and 67,131.39 is: 92,641.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,841.37 : 166,761 = 67,131.39 : x
  2. Step 2: Convert to fraction form
    120,841.37/166,761 = 67,131.39/x
  3. Step 3: Cross multiply
    120,841.37x = 166,761 × 67,131.39
  4. Step 4: Simplify right side
    120,841.37x = 11,194,897,727.79
  5. Step 5: Solve for x
    x = 11,194,897,727.79/120,841.37
  6. Step 6: Final answer
    x = 92,641.27

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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.