Home / 198,784.81-274,320.16-108,141.56

Finding the Fourth Proportional to 198,784.81, 274,320.16 and 108,141.56

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Solution

The fourth proportional to 198,784.81, 274,320.16 and 108,141.56 is: 149,233.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,784.81 : 274,320.16 = 108,141.56 : x
  2. Step 2: Convert to fraction form
    198,784.81/274,320.16 = 108,141.56/x
  3. Step 3: Cross multiply
    198,784.81x = 274,320.16 × 108,141.56
  4. Step 4: Simplify right side
    198,784.81x = 29,665,410,041.85
  5. Step 5: Solve for x
    x = 29,665,410,041.85/198,784.81
  6. Step 6: Final answer
    x = 149,233.79

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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.