Home / 199,318.40-298,992.18-80,991.98

Finding the Fourth Proportional to 199,318.40, 298,992.18 and 80,991.98

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Solution

The fourth proportional to 199,318.40, 298,992.18 and 80,991.98 is: 121,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,318.40 : 298,992.18 = 80,991.98 : x
  2. Step 2: Convert to fraction form
    199,318.40/298,992.18 = 80,991.98/x
  3. Step 3: Cross multiply
    199,318.40x = 298,992.18 × 80,991.98
  4. Step 4: Simplify right side
    199,318.40x = 24,215,969,713.92
  5. Step 5: Solve for x
    x = 24,215,969,713.92/199,318.40
  6. Step 6: Final answer
    x = 121,493.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.