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Finding the Third Proportional to 61,183 and 129,709

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Solution

The third proportional to 61,183 and 129,709 is: 274,985.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,183 : 129,709 = 129,709 : x
  2. Step 2: Convert to fraction form
    61,183/129,709 = 129,709/x
  3. Step 3: Cross multiply
    61,183x = 129,709 × 129,709
  4. Step 4: Simplify right side
    61,183x = 16,824,424,681
  5. Step 5: Solve for x
    x = 16,824,424,681/61,183
  6. Step 6: Final answer
    x = 274,985.28

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.