Home / 143,682.69-198,288.26-80,020.49

Finding the Fourth Proportional to 143,682.69, 198,288.26 and 80,020.49

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Solution

The fourth proportional to 143,682.69, 198,288.26 and 80,020.49 is: 110,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,682.69 : 198,288.26 = 80,020.49 : x
  2. Step 2: Convert to fraction form
    143,682.69/198,288.26 = 80,020.49/x
  3. Step 3: Cross multiply
    143,682.69x = 198,288.26 × 80,020.49
  4. Step 4: Simplify right side
    143,682.69x = 15,867,123,726.45
  5. Step 5: Solve for x
    x = 15,867,123,726.45/143,682.69
  6. Step 6: Final answer
    x = 110,431.70

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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.