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Finding the Fourth Proportional to 121,561.97, 167,806.69 and 73,830.69

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Solution

The fourth proportional to 121,561.97, 167,806.69 and 73,830.69 is: 101,917.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,561.97 : 167,806.69 = 73,830.69 : x
  2. Step 2: Convert to fraction form
    121,561.97/167,806.69 = 73,830.69/x
  3. Step 3: Cross multiply
    121,561.97x = 167,806.69 × 73,830.69
  4. Step 4: Simplify right side
    121,561.97x = 12,389,283,524.74
  5. Step 5: Solve for x
    x = 12,389,283,524.74/121,561.97
  6. Step 6: Final answer
    x = 101,917.43

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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.