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Finding the Fourth Proportional to 137,556.70, 189,906.90 and 105,231.76

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Solution

The fourth proportional to 137,556.70, 189,906.90 and 105,231.76 is: 145,280.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,556.70 : 189,906.90 = 105,231.76 : x
  2. Step 2: Convert to fraction form
    137,556.70/189,906.90 = 105,231.76/x
  3. Step 3: Cross multiply
    137,556.70x = 189,906.90 × 105,231.76
  4. Step 4: Simplify right side
    137,556.70x = 19,984,237,323.14
  5. Step 5: Solve for x
    x = 19,984,237,323.14/137,556.70
  6. Step 6: Final answer
    x = 145,280.00

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