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Finding the Fourth Proportional to 138,506.00, 207,660.56 and 71,058.38

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Solution

The fourth proportional to 138,506.00, 207,660.56 and 71,058.38 is: 106,537.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,506.00 : 207,660.56 = 71,058.38 : x
  2. Step 2: Convert to fraction form
    138,506.00/207,660.56 = 71,058.38/x
  3. Step 3: Cross multiply
    138,506.00x = 207,660.56 × 71,058.38
  4. Step 4: Simplify right side
    138,506.00x = 14,756,021,589.90
  5. Step 5: Solve for x
    x = 14,756,021,589.90/138,506.00
  6. Step 6: Final answer
    x = 106,537.06

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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.