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Finding the Fourth Proportional to 103,391.32, 154,961.78 and 47,154.38

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Solution

The fourth proportional to 103,391.32, 154,961.78 and 47,154.38 is: 70,674.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,391.32 : 154,961.78 = 47,154.38 : x
  2. Step 2: Convert to fraction form
    103,391.32/154,961.78 = 47,154.38/x
  3. Step 3: Cross multiply
    103,391.32x = 154,961.78 × 47,154.38
  4. Step 4: Simplify right side
    103,391.32x = 7,307,126,659.60
  5. Step 5: Solve for x
    x = 7,307,126,659.60/103,391.32
  6. Step 6: Final answer
    x = 70,674.47

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