Home / 120,948.72-166,990.68-108,162.24

Finding the Fourth Proportional to 120,948.72, 166,990.68 and 108,162.24

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Solution

The fourth proportional to 120,948.72, 166,990.68 and 108,162.24 is: 149,336.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,948.72 : 166,990.68 = 108,162.24 : x
  2. Step 2: Convert to fraction form
    120,948.72/166,990.68 = 108,162.24/x
  3. Step 3: Cross multiply
    120,948.72x = 166,990.68 × 108,162.24
  4. Step 4: Simplify right side
    120,948.72x = 18,062,086,007.92
  5. Step 5: Solve for x
    x = 18,062,086,007.92/120,948.72
  6. Step 6: Final answer
    x = 149,336.73

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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.