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Finding the Fourth Proportional to 253,931.54, 381,072.59 and 87,719.54

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Solution

The fourth proportional to 253,931.54, 381,072.59 and 87,719.54 is: 131,639.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,931.54 : 381,072.59 = 87,719.54 : x
  2. Step 2: Convert to fraction form
    253,931.54/381,072.59 = 87,719.54/x
  3. Step 3: Cross multiply
    253,931.54x = 381,072.59 × 87,719.54
  4. Step 4: Simplify right side
    253,931.54x = 33,427,511,862.81
  5. Step 5: Solve for x
    x = 33,427,511,862.81/253,931.54
  6. Step 6: Final answer
    x = 131,639.86

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