Home / 143,979.50-198,691.72-80,317.30

Finding the Fourth Proportional to 143,979.50, 198,691.72 and 80,317.30

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Solution

The fourth proportional to 143,979.50, 198,691.72 and 80,317.30 is: 110,837.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,979.50 : 198,691.72 = 80,317.30 : x
  2. Step 2: Convert to fraction form
    143,979.50/198,691.72 = 80,317.30/x
  3. Step 3: Cross multiply
    143,979.50x = 198,691.72 × 80,317.30
  4. Step 4: Simplify right side
    143,979.50x = 15,958,382,482.76
  5. Step 5: Solve for x
    x = 15,958,382,482.76/143,979.50
  6. Step 6: Final answer
    x = 110,837.88

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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.