Home / 143,366.80-197,850.46-78,832.68

Finding the Fourth Proportional to 143,366.80, 197,850.46 and 78,832.68

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Solution

The fourth proportional to 143,366.80, 197,850.46 and 78,832.68 is: 108,791.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,366.80 : 197,850.46 = 78,832.68 : x
  2. Step 2: Convert to fraction form
    143,366.80/197,850.46 = 78,832.68/x
  3. Step 3: Cross multiply
    143,366.80x = 197,850.46 × 78,832.68
  4. Step 4: Simplify right side
    143,366.80x = 15,597,082,001.03
  5. Step 5: Solve for x
    x = 15,597,082,001.03/143,366.80
  6. Step 6: Final answer
    x = 108,791.45

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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.