Home / 143,864.91-198,529.25-79,334.15

Finding the Fourth Proportional to 143,864.91, 198,529.25 and 79,334.15

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Solution

The fourth proportional to 143,864.91, 198,529.25 and 79,334.15 is: 109,478.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,864.91 : 198,529.25 = 79,334.15 : x
  2. Step 2: Convert to fraction form
    143,864.91/198,529.25 = 79,334.15/x
  3. Step 3: Cross multiply
    143,864.91x = 198,529.25 × 79,334.15
  4. Step 4: Simplify right side
    143,864.91x = 15,750,147,909.57
  5. Step 5: Solve for x
    x = 15,750,147,909.57/143,864.91
  6. Step 6: Final answer
    x = 109,478.73

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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.