Home / 143,909.88-198,596.93-79,381.61

Finding the Fourth Proportional to 143,909.88, 198,596.93 and 79,381.61

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Solution

The fourth proportional to 143,909.88, 198,596.93 and 79,381.61 is: 109,547.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,909.88 : 198,596.93 = 79,381.61 : x
  2. Step 2: Convert to fraction form
    143,909.88/198,596.93 = 79,381.61/x
  3. Step 3: Cross multiply
    143,909.88x = 198,596.93 × 79,381.61
  4. Step 4: Simplify right side
    143,909.88x = 15,764,942,654.56
  5. Step 5: Solve for x
    x = 15,764,942,654.56/143,909.88
  6. Step 6: Final answer
    x = 109,547.33

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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.