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Finding the Fourth Proportional to 103,616.81, 155,424.60 and 28,736.16

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Solution

The fourth proportional to 103,616.81, 155,424.60 and 28,736.16 is: 43,104.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.81 : 155,424.60 = 28,736.16 : x
  2. Step 2: Convert to fraction form
    103,616.81/155,424.60 = 28,736.16/x
  3. Step 3: Cross multiply
    103,616.81x = 155,424.60 × 28,736.16
  4. Step 4: Simplify right side
    103,616.81x = 4,466,306,173.54
  5. Step 5: Solve for x
    x = 4,466,306,173.54/103,616.81
  6. Step 6: Final answer
    x = 43,104.07

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