Home / 120,481.65-166,265.64-66,767.56

Finding the Fourth Proportional to 120,481.65, 166,265.64 and 66,767.56

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Solution

The fourth proportional to 120,481.65, 166,265.64 and 66,767.56 is: 92,139.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,481.65 : 166,265.64 = 66,767.56 : x
  2. Step 2: Convert to fraction form
    120,481.65/166,265.64 = 66,767.56/x
  3. Step 3: Cross multiply
    120,481.65x = 166,265.64 × 66,767.56
  4. Step 4: Simplify right side
    120,481.65x = 11,101,150,678.97
  5. Step 5: Solve for x
    x = 11,101,150,678.97/120,481.65
  6. Step 6: Final answer
    x = 92,139.76

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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.