Home / 143,712.09-198,328.80-80,049.87

Finding the Fourth Proportional to 143,712.09, 198,328.80 and 80,049.87

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Solution

The fourth proportional to 143,712.09, 198,328.80 and 80,049.87 is: 110,472.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,712.09 : 198,328.80 = 80,049.87 : x
  2. Step 2: Convert to fraction form
    143,712.09/198,328.80 = 80,049.87/x
  3. Step 3: Cross multiply
    143,712.09x = 198,328.80 × 80,049.87
  4. Step 4: Simplify right side
    143,712.09x = 15,876,194,957.44
  5. Step 5: Solve for x
    x = 15,876,194,957.44/143,712.09
  6. Step 6: Final answer
    x = 110,472.23

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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.