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Finding the Fourth Proportional to 138,299.10, 207,510.62 and 67,182.72

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Solution

The fourth proportional to 138,299.10, 207,510.62 and 67,182.72 is: 100,804.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,299.10 : 207,510.62 = 67,182.72 : x
  2. Step 2: Convert to fraction form
    138,299.10/207,510.62 = 67,182.72/x
  3. Step 3: Cross multiply
    138,299.10x = 207,510.62 × 67,182.72
  4. Step 4: Simplify right side
    138,299.10x = 13,941,127,544.57
  5. Step 5: Solve for x
    x = 13,941,127,544.57/138,299.10
  6. Step 6: Final answer
    x = 100,804.18

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