Home / 276,072.20-414,121.68-76,388.18

Finding the Fourth Proportional to 276,072.20, 414,121.68 and 76,388.18

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Solution

The fourth proportional to 276,072.20, 414,121.68 and 76,388.18 is: 114,585.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,072.20 : 414,121.68 = 76,388.18 : x
  2. Step 2: Convert to fraction form
    276,072.20/414,121.68 = 76,388.18/x
  3. Step 3: Cross multiply
    276,072.20x = 414,121.68 × 76,388.18
  4. Step 4: Simplify right side
    276,072.20x = 31,634,001,433.74
  5. Step 5: Solve for x
    x = 31,634,001,433.74/276,072.20
  6. Step 6: Final answer
    x = 114,585.97

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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.