Home / 198,893.47-298,211.64-85,115.56

Finding the Fourth Proportional to 198,893.47, 298,211.64 and 85,115.56

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Solution

The fourth proportional to 198,893.47, 298,211.64 and 85,115.56 is: 127,618.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,893.47 : 298,211.64 = 85,115.56 : x
  2. Step 2: Convert to fraction form
    198,893.47/298,211.64 = 85,115.56/x
  3. Step 3: Cross multiply
    198,893.47x = 298,211.64 × 85,115.56
  4. Step 4: Simplify right side
    198,893.47x = 25,382,450,737.12
  5. Step 5: Solve for x
    x = 25,382,450,737.12/198,893.47
  6. Step 6: Final answer
    x = 127,618.32

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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.