Home / 120,480.53-166,264.09-66,766.43

Finding the Fourth Proportional to 120,480.53, 166,264.09 and 66,766.43

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Solution

The fourth proportional to 120,480.53, 166,264.09 and 66,766.43 is: 92,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,480.53 : 166,264.09 = 66,766.43 : x
  2. Step 2: Convert to fraction form
    120,480.53/166,264.09 = 66,766.43/x
  3. Step 3: Cross multiply
    120,480.53x = 166,264.09 × 66,766.43
  4. Step 4: Simplify right side
    120,480.53x = 11,100,859,975.24
  5. Step 5: Solve for x
    x = 11,100,859,975.24/120,480.53
  6. Step 6: Final answer
    x = 92,138.21

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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.