Home / 124,158.44-171,286.38-78,136.56

Finding the Fourth Proportional to 124,158.44, 171,286.38 and 78,136.56

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Solution

The fourth proportional to 124,158.44, 171,286.38 and 78,136.56 is: 107,795.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,158.44 : 171,286.38 = 78,136.56 : x
  2. Step 2: Convert to fraction form
    124,158.44/171,286.38 = 78,136.56/x
  3. Step 3: Cross multiply
    124,158.44x = 171,286.38 × 78,136.56
  4. Step 4: Simplify right side
    124,158.44x = 13,383,728,508.05
  5. Step 5: Solve for x
    x = 13,383,728,508.05/124,158.44
  6. Step 6: Final answer
    x = 107,795.56

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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.