Home / 120,497.20-166,286.15-66,785.68

Finding the Fourth Proportional to 120,497.20, 166,286.15 and 66,785.68

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Solution

The fourth proportional to 120,497.20, 166,286.15 and 66,785.68 is: 92,164.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,497.20 : 166,286.15 = 66,785.68 : x
  2. Step 2: Convert to fraction form
    120,497.20/166,286.15 = 66,785.68/x
  3. Step 3: Cross multiply
    120,497.20x = 166,286.15 × 66,785.68
  4. Step 4: Simplify right side
    120,497.20x = 11,105,532,852.69
  5. Step 5: Solve for x
    x = 11,105,532,852.69/120,497.20
  6. Step 6: Final answer
    x = 92,164.24

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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.