Home / 198,786.80-298,180.92-74,126

Finding the Fourth Proportional to 198,786.80, 298,180.92 and 74,126

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Solution

The fourth proportional to 198,786.80, 298,180.92 and 74,126 is: 111,189.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,786.80 : 298,180.92 = 74,126 : x
  2. Step 2: Convert to fraction form
    198,786.80/298,180.92 = 74,126/x
  3. Step 3: Cross multiply
    198,786.80x = 298,180.92 × 74,126
  4. Step 4: Simplify right side
    198,786.80x = 22,102,958,875.92
  5. Step 5: Solve for x
    x = 22,102,958,875.92/198,786.80
  6. Step 6: Final answer
    x = 111,189.27

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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.