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Finding the Fourth Proportional to 126,697.81, 189,668.10 and 76,626.45

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Solution

The fourth proportional to 126,697.81, 189,668.10 and 76,626.45 is: 114,710.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,697.81 : 189,668.10 = 76,626.45 : x
  2. Step 2: Convert to fraction form
    126,697.81/189,668.10 = 76,626.45/x
  3. Step 3: Cross multiply
    126,697.81x = 189,668.10 × 76,626.45
  4. Step 4: Simplify right side
    126,697.81x = 14,533,593,181.25
  5. Step 5: Solve for x
    x = 14,533,593,181.25/126,697.81
  6. Step 6: Final answer
    x = 114,710.69

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