Home / 120,456.52-166,231.32-66,742.39

Finding the Fourth Proportional to 120,456.52, 166,231.32 and 66,742.39

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Solution

The fourth proportional to 120,456.52, 166,231.32 and 66,742.39 is: 92,105.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,456.52 : 166,231.32 = 66,742.39 : x
  2. Step 2: Convert to fraction form
    120,456.52/166,231.32 = 66,742.39/x
  3. Step 3: Cross multiply
    120,456.52x = 166,231.32 × 66,742.39
  4. Step 4: Simplify right side
    120,456.52x = 11,094,675,589.65
  5. Step 5: Solve for x
    x = 11,094,675,589.65/120,456.52
  6. Step 6: Final answer
    x = 92,105.23

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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.