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Finding the Third Proportional to 129,030 and 199,377

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Solution

The third proportional to 129,030 and 199,377 is: 308,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,030 : 199,377 = 199,377 : x
  2. Step 2: Convert to fraction form
    129,030/199,377 = 199,377/x
  3. Step 3: Cross multiply
    129,030x = 199,377 × 199,377
  4. Step 4: Simplify right side
    129,030x = 39,751,188,129
  5. Step 5: Solve for x
    x = 39,751,188,129/129,030
  6. Step 6: Final answer
    x = 308,077.10

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.