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Finding the Fourth Proportional to 109,342.20, 164,013.30 and 99,665.40

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Solution

The fourth proportional to 109,342.20, 164,013.30 and 99,665.40 is: 149,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,342.20 : 164,013.30 = 99,665.40 : x
  2. Step 2: Convert to fraction form
    109,342.20/164,013.30 = 99,665.40/x
  3. Step 3: Cross multiply
    109,342.20x = 164,013.30 × 99,665.40
  4. Step 4: Simplify right side
    109,342.20x = 16,346,451,149.82
  5. Step 5: Solve for x
    x = 16,346,451,149.82/109,342.20
  6. Step 6: Final answer
    x = 149,498.10

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