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Finding the Fourth Proportional to 101,978.42, 140,750.35 and 65,161.08

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Solution

The fourth proportional to 101,978.42, 140,750.35 and 65,161.08 is: 89,935.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,978.42 : 140,750.35 = 65,161.08 : x
  2. Step 2: Convert to fraction form
    101,978.42/140,750.35 = 65,161.08/x
  3. Step 3: Cross multiply
    101,978.42x = 140,750.35 × 65,161.08
  4. Step 4: Simplify right side
    101,978.42x = 9,171,444,653.48
  5. Step 5: Solve for x
    x = 9,171,444,653.48/101,978.42
  6. Step 6: Final answer
    x = 89,935.16

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