Home / 134,869.56-186,005.72-81,144.53

Finding the Fourth Proportional to 134,869.56, 186,005.72 and 81,144.53

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Solution

The fourth proportional to 134,869.56, 186,005.72 and 81,144.53 is: 111,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,869.56 : 186,005.72 = 81,144.53 : x
  2. Step 2: Convert to fraction form
    134,869.56/186,005.72 = 81,144.53/x
  3. Step 3: Cross multiply
    134,869.56x = 186,005.72 × 81,144.53
  4. Step 4: Simplify right side
    134,869.56x = 15,093,347,286.91
  5. Step 5: Solve for x
    x = 15,093,347,286.91/134,869.56
  6. Step 6: Final answer
    x = 111,910.71

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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.