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Finding the Fourth Proportional to 113,896.80, 170,845.20 and 102,621.60

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Solution

The fourth proportional to 113,896.80, 170,845.20 and 102,621.60 is: 153,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,896.80 : 170,845.20 = 102,621.60 : x
  2. Step 2: Convert to fraction form
    113,896.80/170,845.20 = 102,621.60/x
  3. Step 3: Cross multiply
    113,896.80x = 170,845.20 × 102,621.60
  4. Step 4: Simplify right side
    113,896.80x = 17,532,407,776.32
  5. Step 5: Solve for x
    x = 17,532,407,776.32/113,896.80
  6. Step 6: Final answer
    x = 153,932.40

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