Home / 198,961.72-298,432.86-74,293

Finding the Fourth Proportional to 198,961.72, 298,432.86 and 74,293

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Solution

The fourth proportional to 198,961.72, 298,432.86 and 74,293 is: 111,435.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,961.72 : 298,432.86 = 74,293 : x
  2. Step 2: Convert to fraction form
    198,961.72/298,432.86 = 74,293/x
  3. Step 3: Cross multiply
    198,961.72x = 298,432.86 × 74,293
  4. Step 4: Simplify right side
    198,961.72x = 22,171,472,467.98
  5. Step 5: Solve for x
    x = 22,171,472,467.98/198,961.72
  6. Step 6: Final answer
    x = 111,435.87

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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.