Home / 143,945.96-198,645.71-80,287.88

Finding the Fourth Proportional to 143,945.96, 198,645.71 and 80,287.88

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Solution

The fourth proportional to 143,945.96, 198,645.71 and 80,287.88 is: 110,797.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,945.96 : 198,645.71 = 80,287.88 : x
  2. Step 2: Convert to fraction form
    143,945.96/198,645.71 = 80,287.88/x
  3. Step 3: Cross multiply
    143,945.96x = 198,645.71 × 80,287.88
  4. Step 4: Simplify right side
    143,945.96x = 15,948,841,532.33
  5. Step 5: Solve for x
    x = 15,948,841,532.33/143,945.96
  6. Step 6: Final answer
    x = 110,797.43

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1.5x scale

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.