Home / 279,772.11-419,369.07-129,890.16

Finding the Fourth Proportional to 279,772.11, 419,369.07 and 129,890.16

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Solution

The fourth proportional to 279,772.11, 419,369.07 and 129,890.16 is: 194,701.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,772.11 : 419,369.07 = 129,890.16 : x
  2. Step 2: Convert to fraction form
    279,772.11/419,369.07 = 129,890.16/x
  3. Step 3: Cross multiply
    279,772.11x = 419,369.07 × 129,890.16
  4. Step 4: Simplify right side
    279,772.11x = 54,471,915,601.35
  5. Step 5: Solve for x
    x = 54,471,915,601.35/279,772.11
  6. Step 6: Final answer
    x = 194,701.02

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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.