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Finding the Fourth Proportional to 147.26, 220.80 and 66.05

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Solution

The fourth proportional to 147.26, 220.80 and 66.05 is: 99.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.26 : 220.80 = 66.05 : x
  2. Step 2: Convert to fraction form
    147.26/220.80 = 66.05/x
  3. Step 3: Cross multiply
    147.26x = 220.80 × 66.05
  4. Step 4: Simplify right side
    147.26x = 14,582.74
  5. Step 5: Solve for x
    x = 14,582.74/147.26
  6. Step 6: Final answer
    x = 99.03

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