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Finding the Fourth Proportional to 120,993.26, 166,974.57 and 67,280.54

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Solution

The fourth proportional to 120,993.26, 166,974.57 and 67,280.54 is: 92,849.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,993.26 : 166,974.57 = 67,280.54 : x
  2. Step 2: Convert to fraction form
    120,993.26/166,974.57 = 67,280.54/x
  3. Step 3: Cross multiply
    120,993.26x = 166,974.57 × 67,280.54
  4. Step 4: Simplify right side
    120,993.26x = 11,234,138,401.00
  5. Step 5: Solve for x
    x = 11,234,138,401.00/120,993.26
  6. Step 6: Final answer
    x = 92,849.29

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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.