Home / 143,908.38-198,594.86-79,380.10

Finding the Fourth Proportional to 143,908.38, 198,594.86 and 79,380.10

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Solution

The fourth proportional to 143,908.38, 198,594.86 and 79,380.10 is: 109,545.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,908.38 : 198,594.86 = 79,380.10 : x
  2. Step 2: Convert to fraction form
    143,908.38/198,594.86 = 79,380.10/x
  3. Step 3: Cross multiply
    143,908.38x = 198,594.86 × 79,380.10
  4. Step 4: Simplify right side
    143,908.38x = 15,764,479,697.63
  5. Step 5: Solve for x
    x = 15,764,479,697.63/143,908.38
  6. Step 6: Final answer
    x = 109,545.25

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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.