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Finding the Fourth Proportional to 159,648.20, 239,438.70 and 80,688.20

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Solution

The fourth proportional to 159,648.20, 239,438.70 and 80,688.20 is: 121,015.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,648.20 : 239,438.70 = 80,688.20 : x
  2. Step 2: Convert to fraction form
    159,648.20/239,438.70 = 80,688.20/x
  3. Step 3: Cross multiply
    159,648.20x = 239,438.70 × 80,688.20
  4. Step 4: Simplify right side
    159,648.20x = 19,319,877,713.34
  5. Step 5: Solve for x
    x = 19,319,877,713.34/159,648.20
  6. Step 6: Final answer
    x = 121,015.32

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