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Finding the Fourth Proportional to 109,363.20, 150,919.92 and 61,616.40

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Solution

The fourth proportional to 109,363.20, 150,919.92 and 61,616.40 is: 85,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,363.20 : 150,919.92 = 61,616.40 : x
  2. Step 2: Convert to fraction form
    109,363.20/150,919.92 = 61,616.40/x
  3. Step 3: Cross multiply
    109,363.20x = 150,919.92 × 61,616.40
  4. Step 4: Simplify right side
    109,363.20x = 9,299,142,158.69
  5. Step 5: Solve for x
    x = 9,299,142,158.69/109,363.20
  6. Step 6: Final answer
    x = 85,029.90

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