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Finding the Fourth Proportional to 100,910.50, 139,260.81 and 56,198.50

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Solution

The fourth proportional to 100,910.50, 139,260.81 and 56,198.50 is: 77,556.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,910.50 : 139,260.81 = 56,198.50 : x
  2. Step 2: Convert to fraction form
    100,910.50/139,260.81 = 56,198.50/x
  3. Step 3: Cross multiply
    100,910.50x = 139,260.81 × 56,198.50
  4. Step 4: Simplify right side
    100,910.50x = 7,826,248,630.79
  5. Step 5: Solve for x
    x = 7,826,248,630.79/100,910.50
  6. Step 6: Final answer
    x = 77,556.34

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