Home / 100,104.09-138,143.64-54,782.07

Finding the Fourth Proportional to 100,104.09, 138,143.64 and 54,782.07

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Solution

The fourth proportional to 100,104.09, 138,143.64 and 54,782.07 is: 75,599.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,104.09 : 138,143.64 = 54,782.07 : x
  2. Step 2: Convert to fraction form
    100,104.09/138,143.64 = 54,782.07/x
  3. Step 3: Cross multiply
    100,104.09x = 138,143.64 × 54,782.07
  4. Step 4: Simplify right side
    100,104.09x = 7,567,794,556.53
  5. Step 5: Solve for x
    x = 7,567,794,556.53/100,104.09
  6. Step 6: Final answer
    x = 75,599.25

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