Home / 135,441.64-186,912.09-81,049.74

Finding the Fourth Proportional to 135,441.64, 186,912.09 and 81,049.74

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Solution

The fourth proportional to 135,441.64, 186,912.09 and 81,049.74 is: 111,850.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,441.64 : 186,912.09 = 81,049.74 : x
  2. Step 2: Convert to fraction form
    135,441.64/186,912.09 = 81,049.74/x
  3. Step 3: Cross multiply
    135,441.64x = 186,912.09 × 81,049.74
  4. Step 4: Simplify right side
    135,441.64x = 15,149,176,297.36
  5. Step 5: Solve for x
    x = 15,149,176,297.36/135,441.64
  6. Step 6: Final answer
    x = 111,850.21

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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.