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Finding the Fourth Proportional to 100,348.64, 138,367.62 and 64,001.48

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Solution

The fourth proportional to 100,348.64, 138,367.62 and 64,001.48 is: 88,249.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,348.64 : 138,367.62 = 64,001.48 : x
  2. Step 2: Convert to fraction form
    100,348.64/138,367.62 = 64,001.48/x
  3. Step 3: Cross multiply
    100,348.64x = 138,367.62 × 64,001.48
  4. Step 4: Simplify right side
    100,348.64x = 8,855,732,464.08
  5. Step 5: Solve for x
    x = 8,855,732,464.08/100,348.64
  6. Step 6: Final answer
    x = 88,249.65

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