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Finding the Fourth Proportional to 136,617.72, 188,532.08 and 76,188.42

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Solution

The fourth proportional to 136,617.72, 188,532.08 and 76,188.42 is: 105,139.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,617.72 : 188,532.08 = 76,188.42 : x
  2. Step 2: Convert to fraction form
    136,617.72/188,532.08 = 76,188.42/x
  3. Step 3: Cross multiply
    136,617.72x = 188,532.08 × 76,188.42
  4. Step 4: Simplify right side
    136,617.72x = 14,363,961,384.90
  5. Step 5: Solve for x
    x = 14,363,961,384.90/136,617.72
  6. Step 6: Final answer
    x = 105,139.82

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