Home / 138,018.21-207,071.06-49,269.75

Finding the Fourth Proportional to 138,018.21, 207,071.06 and 49,269.75

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Solution

The fourth proportional to 138,018.21, 207,071.06 and 49,269.75 is: 73,920.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,018.21 : 207,071.06 = 49,269.75 : x
  2. Step 2: Convert to fraction form
    138,018.21/207,071.06 = 49,269.75/x
  3. Step 3: Cross multiply
    138,018.21x = 207,071.06 × 49,269.75
  4. Step 4: Simplify right side
    138,018.21x = 10,202,339,112.09
  5. Step 5: Solve for x
    x = 10,202,339,112.09/138,018.21
  6. Step 6: Final answer
    x = 73,920.24

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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.