Home / 120,531.27-166,321.95-66,811.71

Finding the Fourth Proportional to 120,531.27, 166,321.95 and 66,811.71

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Solution

The fourth proportional to 120,531.27, 166,321.95 and 66,811.71 is: 92,193.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,531.27 : 166,321.95 = 66,811.71 : x
  2. Step 2: Convert to fraction form
    120,531.27/166,321.95 = 66,811.71/x
  3. Step 3: Cross multiply
    120,531.27x = 166,321.95 × 66,811.71
  4. Step 4: Simplify right side
    120,531.27x = 11,112,253,890.03
  5. Step 5: Solve for x
    x = 11,112,253,890.03/120,531.27
  6. Step 6: Final answer
    x = 92,193.95

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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.