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Finding the Fourth Proportional to 100,949.72, 139,316.78 and 55,627.71

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Solution

The fourth proportional to 100,949.72, 139,316.78 and 55,627.71 is: 76,769.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,949.72 : 139,316.78 = 55,627.71 : x
  2. Step 2: Convert to fraction form
    100,949.72/139,316.78 = 55,627.71/x
  3. Step 3: Cross multiply
    100,949.72x = 139,316.78 × 55,627.71
  4. Step 4: Simplify right side
    100,949.72x = 7,749,873,052.61
  5. Step 5: Solve for x
    x = 7,749,873,052.61/100,949.72
  6. Step 6: Final answer
    x = 76,769.64

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