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Finding the Fourth Proportional to 99,647.16, 137,485.24 and 57,190.20

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Solution

The fourth proportional to 99,647.16, 137,485.24 and 57,190.20 is: 78,906.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,647.16 : 137,485.24 = 57,190.20 : x
  2. Step 2: Convert to fraction form
    99,647.16/137,485.24 = 57,190.20/x
  3. Step 3: Cross multiply
    99,647.16x = 137,485.24 × 57,190.20
  4. Step 4: Simplify right side
    99,647.16x = 7,862,808,372.65
  5. Step 5: Solve for x
    x = 7,862,808,372.65/99,647.16
  6. Step 6: Final answer
    x = 78,906.50

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