Home / 143,286.12-197,733.42-79,622.55

Finding the Fourth Proportional to 143,286.12, 197,733.42 and 79,622.55

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Solution

The fourth proportional to 143,286.12, 197,733.42 and 79,622.55 is: 109,878.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,286.12 : 197,733.42 = 79,622.55 : x
  2. Step 2: Convert to fraction form
    143,286.12/197,733.42 = 79,622.55/x
  3. Step 3: Cross multiply
    143,286.12x = 197,733.42 × 79,622.55
  4. Step 4: Simplify right side
    143,286.12x = 15,744,039,120.62
  5. Step 5: Solve for x
    x = 15,744,039,120.62/143,286.12
  6. Step 6: Final answer
    x = 109,878.33

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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.