Home / 143,934.88-198,629.56-79,408.13

Finding the Fourth Proportional to 143,934.88, 198,629.56 and 79,408.13

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Solution

The fourth proportional to 143,934.88, 198,629.56 and 79,408.13 is: 109,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,934.88 : 198,629.56 = 79,408.13 : x
  2. Step 2: Convert to fraction form
    143,934.88/198,629.56 = 79,408.13/x
  3. Step 3: Cross multiply
    143,934.88x = 198,629.56 × 79,408.13
  4. Step 4: Simplify right side
    143,934.88x = 15,772,801,922.39
  5. Step 5: Solve for x
    x = 15,772,801,922.39/143,934.88
  6. Step 6: Final answer
    x = 109,582.90

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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.