Home / 143,581.26-198,142.14-79,917.69

Finding the Fourth Proportional to 143,581.26, 198,142.14 and 79,917.69

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Solution

The fourth proportional to 143,581.26, 198,142.14 and 79,917.69 is: 110,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,581.26 : 198,142.14 = 79,917.69 : x
  2. Step 2: Convert to fraction form
    143,581.26/198,142.14 = 79,917.69/x
  3. Step 3: Cross multiply
    143,581.26x = 198,142.14 × 79,917.69
  4. Step 4: Simplify right side
    143,581.26x = 15,835,062,120.46
  5. Step 5: Solve for x
    x = 15,835,062,120.46/143,581.26
  6. Step 6: Final answer
    x = 110,286.41

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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.