Home / 143,899.65-198,576.61-79,371.44

Finding the Fourth Proportional to 143,899.65, 198,576.61 and 79,371.44

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Solution

The fourth proportional to 143,899.65, 198,576.61 and 79,371.44 is: 109,529.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,899.65 : 198,576.61 = 79,371.44 : x
  2. Step 2: Convert to fraction form
    143,899.65/198,576.61 = 79,371.44/x
  3. Step 3: Cross multiply
    143,899.65x = 198,576.61 × 79,371.44
  4. Step 4: Simplify right side
    143,899.65x = 15,761,311,723.38
  5. Step 5: Solve for x
    x = 15,761,311,723.38/143,899.65
  6. Step 6: Final answer
    x = 109,529.89

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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.