Home / 143,992.45-198,709.66-80,330.25

Finding the Fourth Proportional to 143,992.45, 198,709.66 and 80,330.25

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Solution

The fourth proportional to 143,992.45, 198,709.66 and 80,330.25 is: 110,855.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,992.45 : 198,709.66 = 80,330.25 : x
  2. Step 2: Convert to fraction form
    143,992.45/198,709.66 = 80,330.25/x
  3. Step 3: Cross multiply
    143,992.45x = 198,709.66 × 80,330.25
  4. Step 4: Simplify right side
    143,992.45x = 15,962,396,665.22
  5. Step 5: Solve for x
    x = 15,962,396,665.22/143,992.45
  6. Step 6: Final answer
    x = 110,855.79

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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.