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Finding the Fourth Proportional to 103,628.40, 143,007.40 and 61,189.64

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Solution

The fourth proportional to 103,628.40, 143,007.40 and 61,189.64 is: 84,441.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.40 : 143,007.40 = 61,189.64 : x
  2. Step 2: Convert to fraction form
    103,628.40/143,007.40 = 61,189.64/x
  3. Step 3: Cross multiply
    103,628.40x = 143,007.40 × 61,189.64
  4. Step 4: Simplify right side
    103,628.40x = 8,750,571,323.34
  5. Step 5: Solve for x
    x = 8,750,571,323.34/103,628.40
  6. Step 6: Final answer
    x = 84,441.83

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