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Finding the Fourth Proportional to 100,857.54, 151,308.78 and 30,742.32

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Solution

The fourth proportional to 100,857.54, 151,308.78 and 30,742.32 is: 46,120.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,857.54 : 151,308.78 = 30,742.32 : x
  2. Step 2: Convert to fraction form
    100,857.54/151,308.78 = 30,742.32/x
  3. Step 3: Cross multiply
    100,857.54x = 151,308.78 × 30,742.32
  4. Step 4: Simplify right side
    100,857.54x = 4,651,582,933.57
  5. Step 5: Solve for x
    x = 4,651,582,933.57/100,857.54
  6. Step 6: Final answer
    x = 46,120.33

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