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Finding the Fourth Proportional to 138,486.69, 207,757.98 and 43,731.67

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Solution

The fourth proportional to 138,486.69, 207,757.98 and 43,731.67 is: 65,606.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,486.69 : 207,757.98 = 43,731.67 : x
  2. Step 2: Convert to fraction form
    138,486.69/207,757.98 = 43,731.67/x
  3. Step 3: Cross multiply
    138,486.69x = 207,757.98 × 43,731.67
  4. Step 4: Simplify right side
    138,486.69x = 9,085,603,202.57
  5. Step 5: Solve for x
    x = 9,085,603,202.57/138,486.69
  6. Step 6: Final answer
    x = 65,606.33

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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.