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Finding the Fourth Proportional to 143,993.88, 198,712.26 and 80,335.26

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Solution

The fourth proportional to 143,993.88, 198,712.26 and 80,335.26 is: 110,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,993.88 : 198,712.26 = 80,335.26 : x
  2. Step 2: Convert to fraction form
    143,993.88/198,712.26 = 80,335.26/x
  3. Step 3: Cross multiply
    143,993.88x = 198,712.26 × 80,335.26
  4. Step 4: Simplify right side
    143,993.88x = 15,963,601,072.29
  5. Step 5: Solve for x
    x = 15,963,601,072.29/143,993.88
  6. Step 6: Final answer
    x = 110,863.05

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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.