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Finding the Fourth Proportional to 120,480.44, 166,264.40 and 66,766.37

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Solution

The fourth proportional to 120,480.44, 166,264.40 and 66,766.37 is: 92,138.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,480.44 : 166,264.40 = 66,766.37 : x
  2. Step 2: Convert to fraction form
    120,480.44/166,264.40 = 66,766.37/x
  3. Step 3: Cross multiply
    120,480.44x = 166,264.40 × 66,766.37
  4. Step 4: Simplify right side
    120,480.44x = 11,100,870,114.40
  5. Step 5: Solve for x
    x = 11,100,870,114.40/120,480.44
  6. Step 6: Final answer
    x = 92,138.36

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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.