Home / 198,636.72-274,115.64-107,991.96

Finding the Fourth Proportional to 198,636.72, 274,115.64 and 107,991.96

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Solution

The fourth proportional to 198,636.72, 274,115.64 and 107,991.96 is: 149,027.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,636.72 : 274,115.64 = 107,991.96 : x
  2. Step 2: Convert to fraction form
    198,636.72/274,115.64 = 107,991.96/x
  3. Step 3: Cross multiply
    198,636.72x = 274,115.64 × 107,991.96
  4. Step 4: Simplify right side
    198,636.72x = 29,602,285,230.25
  5. Step 5: Solve for x
    x = 29,602,285,230.25/198,636.72
  6. Step 6: Final answer
    x = 149,027.26

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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.