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Finding the Fourth Proportional to 126,507.74, 189,792.75 and 89,140.78

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Solution

The fourth proportional to 126,507.74, 189,792.75 and 89,140.78 is: 133,733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,507.74 : 189,792.75 = 89,140.78 : x
  2. Step 2: Convert to fraction form
    126,507.74/189,792.75 = 89,140.78/x
  3. Step 3: Cross multiply
    126,507.74x = 189,792.75 × 89,140.78
  4. Step 4: Simplify right side
    126,507.74x = 16,918,273,773.35
  5. Step 5: Solve for x
    x = 16,918,273,773.35/126,507.74
  6. Step 6: Final answer
    x = 133,733.11

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