Home / 143,923.18-198,668.70-108,216.88

Finding the Fourth Proportional to 143,923.18, 198,668.70 and 108,216.88

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Solution

The fourth proportional to 143,923.18, 198,668.70 and 108,216.88 is: 149,380.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,923.18 : 198,668.70 = 108,216.88 : x
  2. Step 2: Convert to fraction form
    143,923.18/198,668.70 = 108,216.88/x
  3. Step 3: Cross multiply
    143,923.18x = 198,668.70 × 108,216.88
  4. Step 4: Simplify right side
    143,923.18x = 21,499,306,867.66
  5. Step 5: Solve for x
    x = 21,499,306,867.66/143,923.18
  6. Step 6: Final answer
    x = 149,380.43

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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.