Home / 143,912.56-198,599.52-79,380.35

Finding the Fourth Proportional to 143,912.56, 198,599.52 and 79,380.35

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Solution

The fourth proportional to 143,912.56, 198,599.52 and 79,380.35 is: 109,544.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,912.56 : 198,599.52 = 79,380.35 : x
  2. Step 2: Convert to fraction form
    143,912.56/198,599.52 = 79,380.35/x
  3. Step 3: Cross multiply
    143,912.56x = 198,599.52 × 79,380.35
  4. Step 4: Simplify right side
    143,912.56x = 15,764,898,414.43
  5. Step 5: Solve for x
    x = 15,764,898,414.43/143,912.56
  6. Step 6: Final answer
    x = 109,544.98

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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.