Home / 143,983.15-198,685.80-79,454.97

Finding the Fourth Proportional to 143,983.15, 198,685.80 and 79,454.97

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Solution

The fourth proportional to 143,983.15, 198,685.80 and 79,454.97 is: 109,641.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,983.15 : 198,685.80 = 79,454.97 : x
  2. Step 2: Convert to fraction form
    143,983.15/198,685.80 = 79,454.97/x
  3. Step 3: Cross multiply
    143,983.15x = 198,685.80 × 79,454.97
  4. Step 4: Simplify right side
    143,983.15x = 15,786,574,278.43
  5. Step 5: Solve for x
    x = 15,786,574,278.43/143,983.15
  6. Step 6: Final answer
    x = 109,641.82

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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.