Home / 198,783.81-274,318.79-108,140.56

Finding the Fourth Proportional to 198,783.81, 274,318.79 and 108,140.56

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Solution

The fourth proportional to 198,783.81, 274,318.79 and 108,140.56 is: 149,232.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,783.81 : 274,318.79 = 108,140.56 : x
  2. Step 2: Convert to fraction form
    198,783.81/274,318.79 = 108,140.56/x
  3. Step 3: Cross multiply
    198,783.81x = 274,318.79 × 108,140.56
  4. Step 4: Simplify right side
    198,783.81x = 29,664,986,342.62
  5. Step 5: Solve for x
    x = 29,664,986,342.62/198,783.81
  6. Step 6: Final answer
    x = 149,232.41

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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.