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Finding the Third Proportional to 129,017 and 189,730

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Solution

The third proportional to 129,017 and 189,730 is: 279,013.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,017 : 189,730 = 189,730 : x
  2. Step 2: Convert to fraction form
    129,017/189,730 = 189,730/x
  3. Step 3: Cross multiply
    129,017x = 189,730 × 189,730
  4. Step 4: Simplify right side
    129,017x = 35,997,472,900
  5. Step 5: Solve for x
    x = 35,997,472,900/129,017
  6. Step 6: Final answer
    x = 279,013.41

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.