Home / 198,839.77-298,221.15-77,260.09

Finding the Fourth Proportional to 198,839.77, 298,221.15 and 77,260.09

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Solution

The fourth proportional to 198,839.77, 298,221.15 and 77,260.09 is: 115,875.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,839.77 : 298,221.15 = 77,260.09 : x
  2. Step 2: Convert to fraction form
    198,839.77/298,221.15 = 77,260.09/x
  3. Step 3: Cross multiply
    198,839.77x = 298,221.15 × 77,260.09
  4. Step 4: Simplify right side
    198,839.77x = 23,040,593,537.88
  5. Step 5: Solve for x
    x = 23,040,593,537.88/198,839.77
  6. Step 6: Final answer
    x = 115,875.18

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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.