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Finding the Fourth Proportional to 121,578.44, 167,786.70 and 67,873.94

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Solution

The fourth proportional to 121,578.44, 167,786.70 and 67,873.94 is: 93,670.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,578.44 : 167,786.70 = 67,873.94 : x
  2. Step 2: Convert to fraction form
    121,578.44/167,786.70 = 67,873.94/x
  3. Step 3: Cross multiply
    121,578.44x = 167,786.70 × 67,873.94
  4. Step 4: Simplify right side
    121,578.44x = 11,388,344,408.60
  5. Step 5: Solve for x
    x = 11,388,344,408.60/121,578.44
  6. Step 6: Final answer
    x = 93,670.76

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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.