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Finding the Fourth Proportional to 138,334.40, 190,898.96 and 77,904.80

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Solution

The fourth proportional to 138,334.40, 190,898.96 and 77,904.80 is: 107,507.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,334.40 : 190,898.96 = 77,904.80 : x
  2. Step 2: Convert to fraction form
    138,334.40/190,898.96 = 77,904.80/x
  3. Step 3: Cross multiply
    138,334.40x = 190,898.96 × 77,904.80
  4. Step 4: Simplify right side
    138,334.40x = 14,871,945,299.01
  5. Step 5: Solve for x
    x = 14,871,945,299.01/138,334.40
  6. Step 6: Final answer
    x = 107,507.21

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