Home / 135,769.40-203,653.92-76,578.20

Finding the Fourth Proportional to 135,769.40, 203,653.92 and 76,578.20

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Solution

The fourth proportional to 135,769.40, 203,653.92 and 76,578.20 is: 114,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,769.40 : 203,653.92 = 76,578.20 : x
  2. Step 2: Convert to fraction form
    135,769.40/203,653.92 = 76,578.20/x
  3. Step 3: Cross multiply
    135,769.40x = 203,653.92 × 76,578.20
  4. Step 4: Simplify right side
    135,769.40x = 15,595,450,616.54
  5. Step 5: Solve for x
    x = 15,595,450,616.54/135,769.40
  6. Step 6: Final answer
    x = 114,867.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.