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Finding the Fourth Proportional to 107,915.80, 161,700.90 and 70,936.60

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Solution

The fourth proportional to 107,915.80, 161,700.90 and 70,936.60 is: 106,291.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,915.80 : 161,700.90 = 70,936.60 : x
  2. Step 2: Convert to fraction form
    107,915.80/161,700.90 = 70,936.60/x
  3. Step 3: Cross multiply
    107,915.80x = 161,700.90 × 70,936.60
  4. Step 4: Simplify right side
    107,915.80x = 11,470,512,062.94
  5. Step 5: Solve for x
    x = 11,470,512,062.94/107,915.80
  6. Step 6: Final answer
    x = 106,291.31

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