Home / 143,771.96-198,406.13-83,378.43

Finding the Fourth Proportional to 143,771.96, 198,406.13 and 83,378.43

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Solution

The fourth proportional to 143,771.96, 198,406.13 and 83,378.43 is: 115,062.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,771.96 : 198,406.13 = 83,378.43 : x
  2. Step 2: Convert to fraction form
    143,771.96/198,406.13 = 83,378.43/x
  3. Step 3: Cross multiply
    143,771.96x = 198,406.13 × 83,378.43
  4. Step 4: Simplify right side
    143,771.96x = 16,542,791,204.88
  5. Step 5: Solve for x
    x = 16,542,791,204.88/143,771.96
  6. Step 6: Final answer
    x = 115,062.71

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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.