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Finding the Fourth Proportional to 120,408.53, 166,166.46 and 68,724.59

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Solution

The fourth proportional to 120,408.53, 166,166.46 and 68,724.59 is: 94,841.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,408.53 : 166,166.46 = 68,724.59 : x
  2. Step 2: Convert to fraction form
    120,408.53/166,166.46 = 68,724.59/x
  3. Step 3: Cross multiply
    120,408.53x = 166,166.46 × 68,724.59
  4. Step 4: Simplify right side
    120,408.53x = 11,419,722,250.67
  5. Step 5: Solve for x
    x = 11,419,722,250.67/120,408.53
  6. Step 6: Final answer
    x = 94,841.48

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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.