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Finding the Fourth Proportional to 121,939.14, 168,282.54 and 68,220.94

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Solution

The fourth proportional to 121,939.14, 168,282.54 and 68,220.94 is: 94,148.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,939.14 : 168,282.54 = 68,220.94 : x
  2. Step 2: Convert to fraction form
    121,939.14/168,282.54 = 68,220.94/x
  3. Step 3: Cross multiply
    121,939.14x = 168,282.54 × 68,220.94
  4. Step 4: Simplify right side
    121,939.14x = 11,480,393,064.39
  5. Step 5: Solve for x
    x = 11,480,393,064.39/121,939.14
  6. Step 6: Final answer
    x = 94,148.55

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