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Finding the Fourth Proportional to 121,504.84, 167,676.78 and 67,789.86

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Solution

The fourth proportional to 121,504.84, 167,676.78 and 67,789.86 is: 93,550.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,504.84 : 167,676.78 = 67,789.86 : x
  2. Step 2: Convert to fraction form
    121,504.84/167,676.78 = 67,789.86/x
  3. Step 3: Cross multiply
    121,504.84x = 167,676.78 × 67,789.86
  4. Step 4: Simplify right side
    121,504.84x = 11,366,785,441.45
  5. Step 5: Solve for x
    x = 11,366,785,441.45/121,504.84
  6. Step 6: Final answer
    x = 93,550.06

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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.