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Finding the Fourth Proportional to 120,471.62, 166,260.40 and 66,761.73

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Solution

The fourth proportional to 120,471.62, 166,260.40 and 66,761.73 is: 92,136.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,471.62 : 166,260.40 = 66,761.73 : x
  2. Step 2: Convert to fraction form
    120,471.62/166,260.40 = 66,761.73/x
  3. Step 3: Cross multiply
    120,471.62x = 166,260.40 × 66,761.73
  4. Step 4: Simplify right side
    120,471.62x = 11,099,831,767.59
  5. Step 5: Solve for x
    x = 11,099,831,767.59/120,471.62
  6. Step 6: Final answer
    x = 92,136.49

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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.