Home / 143,576.76-198,135.92-79,913.18

Finding the Fourth Proportional to 143,576.76, 198,135.92 and 79,913.18

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Solution

The fourth proportional to 143,576.76, 198,135.92 and 79,913.18 is: 110,280.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,576.76 : 198,135.92 = 79,913.18 : x
  2. Step 2: Convert to fraction form
    143,576.76/198,135.92 = 79,913.18/x
  3. Step 3: Cross multiply
    143,576.76x = 198,135.92 × 79,913.18
  4. Step 4: Simplify right side
    143,576.76x = 15,833,671,439.43
  5. Step 5: Solve for x
    x = 15,833,671,439.43/143,576.76
  6. Step 6: Final answer
    x = 110,280.18

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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.