Home / 143,576.88-198,136.11-79,913.31

Finding the Fourth Proportional to 143,576.88, 198,136.11 and 79,913.31

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Solution

The fourth proportional to 143,576.88, 198,136.11 and 79,913.31 is: 110,280.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,576.88 : 198,136.11 = 79,913.31 : x
  2. Step 2: Convert to fraction form
    143,576.88/198,136.11 = 79,913.31/x
  3. Step 3: Cross multiply
    143,576.88x = 198,136.11 × 79,913.31
  4. Step 4: Simplify right side
    143,576.88x = 15,833,712,380.62
  5. Step 5: Solve for x
    x = 15,833,712,380.62/143,576.88
  6. Step 6: Final answer
    x = 110,280.38

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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.