Home / 143,575.75-198,134.54-79,912.18

Finding the Fourth Proportional to 143,575.75, 198,134.54 and 79,912.18

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Solution

The fourth proportional to 143,575.75, 198,134.54 and 79,912.18 is: 110,278.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,575.75 : 198,134.54 = 79,912.18 : x
  2. Step 2: Convert to fraction form
    143,575.75/198,134.54 = 79,912.18/x
  3. Step 3: Cross multiply
    143,575.75x = 198,134.54 × 79,912.18
  4. Step 4: Simplify right side
    143,575.75x = 15,833,363,024.70
  5. Step 5: Solve for x
    x = 15,833,363,024.70/143,575.75
  6. Step 6: Final answer
    x = 110,278.81

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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.