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Finding the Fourth Proportional to 199,625.40, 299,438.10 and 128,766.60

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Solution

The fourth proportional to 199,625.40, 299,438.10 and 128,766.60 is: 193,149.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,625.40 : 299,438.10 = 128,766.60 : x
  2. Step 2: Convert to fraction form
    199,625.40/299,438.10 = 128,766.60/x
  3. Step 3: Cross multiply
    199,625.40x = 299,438.10 × 128,766.60
  4. Step 4: Simplify right side
    199,625.40x = 38,557,626,047.46
  5. Step 5: Solve for x
    x = 38,557,626,047.46/199,625.40
  6. Step 6: Final answer
    x = 193,149.90

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