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Finding the Fourth Proportional to 124.58, 172.01 and 96.91

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Solution

The fourth proportional to 124.58, 172.01 and 96.91 is: 133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.58 : 172.01 = 96.91 : x
  2. Step 2: Convert to fraction form
    124.58/172.01 = 96.91/x
  3. Step 3: Cross multiply
    124.58x = 172.01 × 96.91
  4. Step 4: Simplify right side
    124.58x = 16,669.30
  5. Step 5: Solve for x
    x = 16,669.30/124.58
  6. Step 6: Final answer
    x = 133.80

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