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Finding the Fourth Proportional to 143,744.88, 198,368 and 80,086.84

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Solution

The fourth proportional to 143,744.88, 198,368 and 80,086.84 is: 110,519.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,744.88 : 198,368 = 80,086.84 : x
  2. Step 2: Convert to fraction form
    143,744.88/198,368 = 80,086.84/x
  3. Step 3: Cross multiply
    143,744.88x = 198,368 × 80,086.84
  4. Step 4: Simplify right side
    143,744.88x = 15,886,666,277.12
  5. Step 5: Solve for x
    x = 15,886,666,277.12/143,744.88
  6. Step 6: Final answer
    x = 110,519.88

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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.