Home / 143,983.47-198,696.65-80,321.22

Finding the Fourth Proportional to 143,983.47, 198,696.65 and 80,321.22

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Solution

The fourth proportional to 143,983.47, 198,696.65 and 80,321.22 is: 110,842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,983.47 : 198,696.65 = 80,321.22 : x
  2. Step 2: Convert to fraction form
    143,983.47/198,696.65 = 80,321.22/x
  3. Step 3: Cross multiply
    143,983.47x = 198,696.65 × 80,321.22
  4. Step 4: Simplify right side
    143,983.47x = 15,959,556,936.31
  5. Step 5: Solve for x
    x = 15,959,556,936.31/143,983.47
  6. Step 6: Final answer
    x = 110,842.98

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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.