Home / 279,747.54-419,620.89-129,905.91

Finding the Fourth Proportional to 279,747.54, 419,620.89 and 129,905.91

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Solution

The fourth proportional to 279,747.54, 419,620.89 and 129,905.91 is: 194,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,747.54 : 419,620.89 = 129,905.91 : x
  2. Step 2: Convert to fraction form
    279,747.54/419,620.89 = 129,905.91/x
  3. Step 3: Cross multiply
    279,747.54x = 419,620.89 × 129,905.91
  4. Step 4: Simplify right side
    279,747.54x = 54,511,233,570.46
  5. Step 5: Solve for x
    x = 54,511,233,570.46/279,747.54
  6. Step 6: Final answer
    x = 194,858.67

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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.