Home / 198,669.60-298,004.40-131,893.20

Finding the Fourth Proportional to 198,669.60, 298,004.40 and 131,893.20

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Solution

The fourth proportional to 198,669.60, 298,004.40 and 131,893.20 is: 197,839.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,669.60 : 298,004.40 = 131,893.20 : x
  2. Step 2: Convert to fraction form
    198,669.60/298,004.40 = 131,893.20/x
  3. Step 3: Cross multiply
    198,669.60x = 298,004.40 × 131,893.20
  4. Step 4: Simplify right side
    198,669.60x = 39,304,753,930.08
  5. Step 5: Solve for x
    x = 39,304,753,930.08/198,669.60
  6. Step 6: Final answer
    x = 197,839.80

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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.