Home / 120,617.16-166,508.82-80,397.96

Finding the Fourth Proportional to 120,617.16, 166,508.82 and 80,397.96

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Solution

The fourth proportional to 120,617.16, 166,508.82 and 80,397.96 is: 110,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,617.16 : 166,508.82 = 80,397.96 : x
  2. Step 2: Convert to fraction form
    120,617.16/166,508.82 = 80,397.96/x
  3. Step 3: Cross multiply
    120,617.16x = 166,508.82 × 80,397.96
  4. Step 4: Simplify right side
    120,617.16x = 13,386,969,450.01
  5. Step 5: Solve for x
    x = 13,386,969,450.01/120,617.16
  6. Step 6: Final answer
    x = 110,987.27

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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.