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Finding the Fourth Proportional to 138,605.34, 207,933.66 and 43,859.34

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Solution

The fourth proportional to 138,605.34, 207,933.66 and 43,859.34 is: 65,797.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,605.34 : 207,933.66 = 43,859.34 : x
  2. Step 2: Convert to fraction form
    138,605.34/207,933.66 = 43,859.34/x
  3. Step 3: Cross multiply
    138,605.34x = 207,933.66 × 43,859.34
  4. Step 4: Simplify right side
    138,605.34x = 9,119,833,091.38
  5. Step 5: Solve for x
    x = 9,119,833,091.38/138,605.34
  6. Step 6: Final answer
    x = 65,797.13

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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.