Home / 198,872.41-298,305.91-72,540.49

Finding the Fourth Proportional to 198,872.41, 298,305.91 and 72,540.49

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Solution

The fourth proportional to 198,872.41, 298,305.91 and 72,540.49 is: 108,809.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,872.41 : 298,305.91 = 72,540.49 : x
  2. Step 2: Convert to fraction form
    198,872.41/298,305.91 = 72,540.49/x
  3. Step 3: Cross multiply
    198,872.41x = 298,305.91 × 72,540.49
  4. Step 4: Simplify right side
    198,872.41x = 21,639,256,881.30
  5. Step 5: Solve for x
    x = 21,639,256,881.30/198,872.41
  6. Step 6: Final answer
    x = 108,809.75

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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.