Home / 198,638.72-274,118.40-107,993.96

Finding the Fourth Proportional to 198,638.72, 274,118.40 and 107,993.96

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Solution

The fourth proportional to 198,638.72, 274,118.40 and 107,993.96 is: 149,030.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,638.72 : 274,118.40 = 107,993.96 : x
  2. Step 2: Convert to fraction form
    198,638.72/274,118.40 = 107,993.96/x
  3. Step 3: Cross multiply
    198,638.72x = 274,118.40 × 107,993.96
  4. Step 4: Simplify right side
    198,638.72x = 29,603,131,524.86
  5. Step 5: Solve for x
    x = 29,603,131,524.86/198,638.72
  6. Step 6: Final answer
    x = 149,030.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.