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Finding the Fourth Proportional to 142,061.36, 196,044.24 and 78,398.60

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Solution

The fourth proportional to 142,061.36, 196,044.24 and 78,398.60 is: 108,189.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,061.36 : 196,044.24 = 78,398.60 : x
  2. Step 2: Convert to fraction form
    142,061.36/196,044.24 = 78,398.60/x
  3. Step 3: Cross multiply
    142,061.36x = 196,044.24 × 78,398.60
  4. Step 4: Simplify right side
    142,061.36x = 15,369,593,954.06
  5. Step 5: Solve for x
    x = 15,369,593,954.06/142,061.36
  6. Step 6: Final answer
    x = 108,189.83

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