Home / 198,918.86-274,513.79-108,280.67

Finding the Fourth Proportional to 198,918.86, 274,513.79 and 108,280.67

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Solution

The fourth proportional to 198,918.86, 274,513.79 and 108,280.67 is: 149,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,918.86 : 274,513.79 = 108,280.67 : x
  2. Step 2: Convert to fraction form
    198,918.86/274,513.79 = 108,280.67/x
  3. Step 3: Cross multiply
    198,918.86x = 274,513.79 × 108,280.67
  4. Step 4: Simplify right side
    198,918.86x = 29,724,536,003.57
  5. Step 5: Solve for x
    x = 29,724,536,003.57/198,918.86
  6. Step 6: Final answer
    x = 149,430.46

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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.