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Finding the Fourth Proportional to 149.94, 207 and 100.80

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Solution

The fourth proportional to 149.94, 207 and 100.80 is: 139.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.94 : 207 = 100.80 : x
  2. Step 2: Convert to fraction form
    149.94/207 = 100.80/x
  3. Step 3: Cross multiply
    149.94x = 207 × 100.80
  4. Step 4: Simplify right side
    149.94x = 20,865.60
  5. Step 5: Solve for x
    x = 20,865.60/149.94
  6. Step 6: Final answer
    x = 139.16

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