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Finding the Fourth Proportional to 105,220.80, 157,600.80 and 102,916.80

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Solution

The fourth proportional to 105,220.80, 157,600.80 and 102,916.80 is: 154,149.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,220.80 : 157,600.80 = 102,916.80 : x
  2. Step 2: Convert to fraction form
    105,220.80/157,600.80 = 102,916.80/x
  3. Step 3: Cross multiply
    105,220.80x = 157,600.80 × 102,916.80
  4. Step 4: Simplify right side
    105,220.80x = 16,219,770,013.44
  5. Step 5: Solve for x
    x = 16,219,770,013.44/105,220.80
  6. Step 6: Final answer
    x = 154,149.85

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