Home / 143,982.36-198,693.72-80,321.22

Finding the Fourth Proportional to 143,982.36, 198,693.72 and 80,321.22

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Solution

The fourth proportional to 143,982.36, 198,693.72 and 80,321.22 is: 110,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,982.36 : 198,693.72 = 80,321.22 : x
  2. Step 2: Convert to fraction form
    143,982.36/198,693.72 = 80,321.22/x
  3. Step 3: Cross multiply
    143,982.36x = 198,693.72 × 80,321.22
  4. Step 4: Simplify right side
    143,982.36x = 15,959,321,996.74
  5. Step 5: Solve for x
    x = 15,959,321,996.74/143,982.36
  6. Step 6: Final answer
    x = 110,842.20

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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.