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Finding the Third Proportional to 51,930 and 113,742

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Solution

The third proportional to 51,930 and 113,742 is: 249,128.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,930 : 113,742 = 113,742 : x
  2. Step 2: Convert to fraction form
    51,930/113,742 = 113,742/x
  3. Step 3: Cross multiply
    51,930x = 113,742 × 113,742
  4. Step 4: Simplify right side
    51,930x = 12,937,242,564
  5. Step 5: Solve for x
    x = 12,937,242,564/51,930
  6. Step 6: Final answer
    x = 249,128.49

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.