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Finding the Fourth Proportional to 387,139.72, 580,712.46 and 106,672.36

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Solution

The fourth proportional to 387,139.72, 580,712.46 and 106,672.36 is: 160,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,139.72 : 580,712.46 = 106,672.36 : x
  2. Step 2: Convert to fraction form
    387,139.72/580,712.46 = 106,672.36/x
  3. Step 3: Cross multiply
    387,139.72x = 580,712.46 × 106,672.36
  4. Step 4: Simplify right side
    387,139.72x = 61,945,968,589.61
  5. Step 5: Solve for x
    x = 61,945,968,589.61/387,139.72
  6. Step 6: Final answer
    x = 160,009.33

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