Home / 120,481.38-166,264.68-66,767.28

Finding the Fourth Proportional to 120,481.38, 166,264.68 and 66,767.28

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Solution

The fourth proportional to 120,481.38, 166,264.68 and 66,767.28 is: 92,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,481.38 : 166,264.68 = 66,767.28 : x
  2. Step 2: Convert to fraction form
    120,481.38/166,264.68 = 66,767.28/x
  3. Step 3: Cross multiply
    120,481.38x = 166,264.68 × 66,767.28
  4. Step 4: Simplify right side
    120,481.38x = 11,101,040,443.67
  5. Step 5: Solve for x
    x = 11,101,040,443.67/120,481.38
  6. Step 6: Final answer
    x = 92,139.05

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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.