Home / 143,356.89-197,839.26-79,695.75

Finding the Fourth Proportional to 143,356.89, 197,839.26 and 79,695.75

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Solution

The fourth proportional to 143,356.89, 197,839.26 and 79,695.75 is: 109,983.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,356.89 : 197,839.26 = 79,695.75 : x
  2. Step 2: Convert to fraction form
    143,356.89/197,839.26 = 79,695.75/x
  3. Step 3: Cross multiply
    143,356.89x = 197,839.26 × 79,695.75
  4. Step 4: Simplify right side
    143,356.89x = 15,766,948,205.15
  5. Step 5: Solve for x
    x = 15,766,948,205.15/143,356.89
  6. Step 6: Final answer
    x = 109,983.89

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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.