Home / 143,917.80-198,602.19-80,266.38

Finding the Fourth Proportional to 143,917.80, 198,602.19 and 80,266.38

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Solution

The fourth proportional to 143,917.80, 198,602.19 and 80,266.38 is: 110,765.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,917.80 : 198,602.19 = 80,266.38 : x
  2. Step 2: Convert to fraction form
    143,917.80/198,602.19 = 80,266.38/x
  3. Step 3: Cross multiply
    143,917.80x = 198,602.19 × 80,266.38
  4. Step 4: Simplify right side
    143,917.80x = 15,941,078,851.37
  5. Step 5: Solve for x
    x = 15,941,078,851.37/143,917.80
  6. Step 6: Final answer
    x = 110,765.16

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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.