Home / 143,694.16-198,290.10-79,150.75

Finding the Fourth Proportional to 143,694.16, 198,290.10 and 79,150.75

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Solution

The fourth proportional to 143,694.16, 198,290.10 and 79,150.75 is: 109,223.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,694.16 : 198,290.10 = 79,150.75 : x
  2. Step 2: Convert to fraction form
    143,694.16/198,290.10 = 79,150.75/x
  3. Step 3: Cross multiply
    143,694.16x = 198,290.10 × 79,150.75
  4. Step 4: Simplify right side
    143,694.16x = 15,694,810,132.58
  5. Step 5: Solve for x
    x = 15,694,810,132.58/143,694.16
  6. Step 6: Final answer
    x = 109,223.72

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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.