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Finding the Fourth Proportional to 208,143.84, 311,916.86 and 102,839.80

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Solution

The fourth proportional to 208,143.84, 311,916.86 and 102,839.80 is: 154,112.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,143.84 : 311,916.86 = 102,839.80 : x
  2. Step 2: Convert to fraction form
    208,143.84/311,916.86 = 102,839.80/x
  3. Step 3: Cross multiply
    208,143.84x = 311,916.86 × 102,839.80
  4. Step 4: Simplify right side
    208,143.84x = 32,077,467,499.03
  5. Step 5: Solve for x
    x = 32,077,467,499.03/208,143.84
  6. Step 6: Final answer
    x = 154,112.02

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