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Finding the Fourth Proportional to 129,736.40, 194,297.40 and 87,957.20

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Solution

The fourth proportional to 129,736.40, 194,297.40 and 87,957.20 is: 131,727.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,736.40 : 194,297.40 = 87,957.20 : x
  2. Step 2: Convert to fraction form
    129,736.40/194,297.40 = 87,957.20/x
  3. Step 3: Cross multiply
    129,736.40x = 194,297.40 × 87,957.20
  4. Step 4: Simplify right side
    129,736.40x = 17,089,855,271.28
  5. Step 5: Solve for x
    x = 17,089,855,271.28/129,736.40
  6. Step 6: Final answer
    x = 131,727.53

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