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Finding the Fourth Proportional to 165,293, 247,978.38 and 54,485

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Solution

The fourth proportional to 165,293, 247,978.38 and 54,485 is: 81,740.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,293 : 247,978.38 = 54,485 : x
  2. Step 2: Convert to fraction form
    165,293/247,978.38 = 54,485/x
  3. Step 3: Cross multiply
    165,293x = 247,978.38 × 54,485
  4. Step 4: Simplify right side
    165,293x = 13,511,102,034.30
  5. Step 5: Solve for x
    x = 13,511,102,034.30/165,293
  6. Step 6: Final answer
    x = 81,740.32

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