Home / 167,617.42-251,260.05-78,711.78

Finding the Fourth Proportional to 167,617.42, 251,260.05 and 78,711.78

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Solution

The fourth proportional to 167,617.42, 251,260.05 and 78,711.78 is: 117,989.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,617.42 : 251,260.05 = 78,711.78 : x
  2. Step 2: Convert to fraction form
    167,617.42/251,260.05 = 78,711.78/x
  3. Step 3: Cross multiply
    167,617.42x = 251,260.05 × 78,711.78
  4. Step 4: Simplify right side
    167,617.42x = 19,777,125,778.39
  5. Step 5: Solve for x
    x = 19,777,125,778.39/167,617.42
  6. Step 6: Final answer
    x = 117,989.68

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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.