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Finding the Fourth Proportional to 121,351.95, 167,466.48 and 67,640.37

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Solution

The fourth proportional to 121,351.95, 167,466.48 and 67,640.37 is: 93,344.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,351.95 : 167,466.48 = 67,640.37 : x
  2. Step 2: Convert to fraction form
    121,351.95/167,466.48 = 67,640.37/x
  3. Step 3: Cross multiply
    121,351.95x = 167,466.48 × 67,640.37
  4. Step 4: Simplify right side
    121,351.95x = 11,327,494,669.80
  5. Step 5: Solve for x
    x = 11,327,494,669.80/121,351.95
  6. Step 6: Final answer
    x = 93,344.15

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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.