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Finding the Fourth Proportional to 138,359.40, 207,539.16 and 106,815.51

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Solution

The fourth proportional to 138,359.40, 207,539.16 and 106,815.51 is: 160,223.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,359.40 : 207,539.16 = 106,815.51 : x
  2. Step 2: Convert to fraction form
    138,359.40/207,539.16 = 106,815.51/x
  3. Step 3: Cross multiply
    138,359.40x = 207,539.16 × 106,815.51
  4. Step 4: Simplify right side
    138,359.40x = 22,168,401,220.37
  5. Step 5: Solve for x
    x = 22,168,401,220.37/138,359.40
  6. Step 6: Final answer
    x = 160,223.31

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