Home / 143,695.49-198,305.85-80,033.28

Finding the Fourth Proportional to 143,695.49, 198,305.85 and 80,033.28

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Solution

The fourth proportional to 143,695.49, 198,305.85 and 80,033.28 is: 110,449.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,695.49 : 198,305.85 = 80,033.28 : x
  2. Step 2: Convert to fraction form
    143,695.49/198,305.85 = 80,033.28/x
  3. Step 3: Cross multiply
    143,695.49x = 198,305.85 × 80,033.28
  4. Step 4: Simplify right side
    143,695.49x = 15,871,067,175.17
  5. Step 5: Solve for x
    x = 15,871,067,175.17/143,695.49
  6. Step 6: Final answer
    x = 110,449.31

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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.