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Finding the Fourth Proportional to 138,771.33, 191,509.07 and 85,045.96

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Solution

The fourth proportional to 138,771.33, 191,509.07 and 85,045.96 is: 117,366.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,771.33 : 191,509.07 = 85,045.96 : x
  2. Step 2: Convert to fraction form
    138,771.33/191,509.07 = 85,045.96/x
  3. Step 3: Cross multiply
    138,771.33x = 191,509.07 × 85,045.96
  4. Step 4: Simplify right side
    138,771.33x = 16,287,072,706.86
  5. Step 5: Solve for x
    x = 16,287,072,706.86/138,771.33
  6. Step 6: Final answer
    x = 117,366.27

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