Home / 121,906.84-168,223.52-68,182.56

Finding the Fourth Proportional to 121,906.84, 168,223.52 and 68,182.56

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Solution

The fourth proportional to 121,906.84, 168,223.52 and 68,182.56 is: 94,087.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,906.84 : 168,223.52 = 68,182.56 : x
  2. Step 2: Convert to fraction form
    121,906.84/168,223.52 = 68,182.56/x
  3. Step 3: Cross multiply
    121,906.84x = 168,223.52 × 68,182.56
  4. Step 4: Simplify right side
    121,906.84x = 11,469,910,245.81
  5. Step 5: Solve for x
    x = 11,469,910,245.81/121,906.84
  6. Step 6: Final answer
    x = 94,087.50

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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.