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Finding the Fourth Proportional to 138,595.08, 207,871.02 and 45,100.20

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Solution

The fourth proportional to 138,595.08, 207,871.02 and 45,100.20 is: 67,643.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,595.08 : 207,871.02 = 45,100.20 : x
  2. Step 2: Convert to fraction form
    138,595.08/207,871.02 = 45,100.20/x
  3. Step 3: Cross multiply
    138,595.08x = 207,871.02 × 45,100.20
  4. Step 4: Simplify right side
    138,595.08x = 9,375,024,576.20
  5. Step 5: Solve for x
    x = 9,375,024,576.20/138,595.08
  6. Step 6: Final answer
    x = 67,643.27

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