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Finding the Third Proportional to 129,108.75 and 279,657

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Solution

The third proportional to 129,108.75 and 279,657 is: 605,753.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,108.75 : 279,657 = 279,657 : x
  2. Step 2: Convert to fraction form
    129,108.75/279,657 = 279,657/x
  3. Step 3: Cross multiply
    129,108.75x = 279,657 × 279,657
  4. Step 4: Simplify right side
    129,108.75x = 78,208,037,649
  5. Step 5: Solve for x
    x = 78,208,037,649/129,108.75
  6. Step 6: Final answer
    x = 605,753.19

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.