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Finding the Fourth Proportional to 139,940.29, 193,115.64 and 76,278.34

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Solution

The fourth proportional to 139,940.29, 193,115.64 and 76,278.34 is: 105,263.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,940.29 : 193,115.64 = 76,278.34 : x
  2. Step 2: Convert to fraction form
    139,940.29/193,115.64 = 76,278.34/x
  3. Step 3: Cross multiply
    139,940.29x = 193,115.64 × 76,278.34
  4. Step 4: Simplify right side
    139,940.29x = 14,730,540,447.24
  5. Step 5: Solve for x
    x = 14,730,540,447.24/139,940.29
  6. Step 6: Final answer
    x = 105,263.04

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