Home / 143,711.72-198,328.29-80,049.50

Finding the Fourth Proportional to 143,711.72, 198,328.29 and 80,049.50

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Solution

The fourth proportional to 143,711.72, 198,328.29 and 80,049.50 is: 110,471.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,711.72 : 198,328.29 = 80,049.50 : x
  2. Step 2: Convert to fraction form
    143,711.72/198,328.29 = 80,049.50/x
  3. Step 3: Cross multiply
    143,711.72x = 198,328.29 × 80,049.50
  4. Step 4: Simplify right side
    143,711.72x = 15,876,079,458.71
  5. Step 5: Solve for x
    x = 15,876,079,458.71/143,711.72
  6. Step 6: Final answer
    x = 110,471.71

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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.