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Finding the Fourth Proportional to 128,800.37, 177,754.83 and 71,445.35

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Solution

The fourth proportional to 128,800.37, 177,754.83 and 71,445.35 is: 98,600.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,800.37 : 177,754.83 = 71,445.35 : x
  2. Step 2: Convert to fraction form
    128,800.37/177,754.83 = 71,445.35/x
  3. Step 3: Cross multiply
    128,800.37x = 177,754.83 × 71,445.35
  4. Step 4: Simplify right side
    128,800.37x = 12,699,756,043.54
  5. Step 5: Solve for x
    x = 12,699,756,043.54/128,800.37
  6. Step 6: Final answer
    x = 98,600.31

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