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Finding the Fourth Proportional to 138,039.56, 207,103.10 and 49,291.16

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Solution

The fourth proportional to 138,039.56, 207,103.10 and 49,291.16 is: 73,952.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,039.56 : 207,103.10 = 49,291.16 : x
  2. Step 2: Convert to fraction form
    138,039.56/207,103.10 = 49,291.16/x
  3. Step 3: Cross multiply
    138,039.56x = 207,103.10 × 49,291.16
  4. Step 4: Simplify right side
    138,039.56x = 10,208,352,038.60
  5. Step 5: Solve for x
    x = 10,208,352,038.60/138,039.56
  6. Step 6: Final answer
    x = 73,952.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.