Home / 198,905.79-274,491.12-108,261.54

Finding the Fourth Proportional to 198,905.79, 274,491.12 and 108,261.54

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Solution

The fourth proportional to 198,905.79, 274,491.12 and 108,261.54 is: 149,401.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,905.79 : 274,491.12 = 108,261.54 : x
  2. Step 2: Convert to fraction form
    198,905.79/274,491.12 = 108,261.54/x
  3. Step 3: Cross multiply
    198,905.79x = 274,491.12 × 108,261.54
  4. Step 4: Simplify right side
    198,905.79x = 29,716,831,367.52
  5. Step 5: Solve for x
    x = 29,716,831,367.52/198,905.79
  6. Step 6: Final answer
    x = 149,401.54

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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.