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Finding the Fourth Proportional to 102,921.25, 142,031.33 and 55,817.25

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Solution

The fourth proportional to 102,921.25, 142,031.33 and 55,817.25 is: 77,027.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,921.25 : 142,031.33 = 55,817.25 : x
  2. Step 2: Convert to fraction form
    102,921.25/142,031.33 = 55,817.25/x
  3. Step 3: Cross multiply
    102,921.25x = 142,031.33 × 55,817.25
  4. Step 4: Simplify right side
    102,921.25x = 7,927,797,975.36
  5. Step 5: Solve for x
    x = 7,927,797,975.36/102,921.25
  6. Step 6: Final answer
    x = 77,027.81

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