Home / 143,768.60-198,401.45-83,375.05

Finding the Fourth Proportional to 143,768.60, 198,401.45 and 83,375.05

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Solution

The fourth proportional to 143,768.60, 198,401.45 and 83,375.05 is: 115,058.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,768.60 : 198,401.45 = 83,375.05 : x
  2. Step 2: Convert to fraction form
    143,768.60/198,401.45 = 83,375.05/x
  3. Step 3: Cross multiply
    143,768.60x = 198,401.45 × 83,375.05
  4. Step 4: Simplify right side
    143,768.60x = 16,541,730,183.93
  5. Step 5: Solve for x
    x = 16,541,730,183.93/143,768.60
  6. Step 6: Final answer
    x = 115,058.02

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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.