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Finding the Fourth Proportional to 142.74, 214.08 and 88.62

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Solution

The fourth proportional to 142.74, 214.08 and 88.62 is: 132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142.74 : 214.08 = 88.62 : x
  2. Step 2: Convert to fraction form
    142.74/214.08 = 88.62/x
  3. Step 3: Cross multiply
    142.74x = 214.08 × 88.62
  4. Step 4: Simplify right side
    142.74x = 18,971.77
  5. Step 5: Solve for x
    x = 18,971.77/142.74
  6. Step 6: Final answer
    x = 132.91

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