Home / 143,601.28-198,165.12-79,936.96

Finding the Fourth Proportional to 143,601.28, 198,165.12 and 79,936.96

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Solution

The fourth proportional to 143,601.28, 198,165.12 and 79,936.96 is: 110,310.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,601.28 : 198,165.12 = 79,936.96 : x
  2. Step 2: Convert to fraction form
    143,601.28/198,165.12 = 79,936.96/x
  3. Step 3: Cross multiply
    143,601.28x = 198,165.12 × 79,936.96
  4. Step 4: Simplify right side
    143,601.28x = 15,840,717,270.84
  5. Step 5: Solve for x
    x = 15,840,717,270.84/143,601.28
  6. Step 6: Final answer
    x = 110,310.42

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1.5x scale

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.