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Finding the Fourth Proportional to 128,039.46, 176,694.60 and 71,450.82

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Solution

The fourth proportional to 128,039.46, 176,694.60 and 71,450.82 is: 98,602.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,039.46 : 176,694.60 = 71,450.82 : x
  2. Step 2: Convert to fraction form
    128,039.46/176,694.60 = 71,450.82/x
  3. Step 3: Cross multiply
    128,039.46x = 176,694.60 × 71,450.82
  4. Step 4: Simplify right side
    128,039.46x = 12,624,974,059.57
  5. Step 5: Solve for x
    x = 12,624,974,059.57/128,039.46
  6. Step 6: Final answer
    x = 98,602.21

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