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Finding the Third Proportional to 129,127.50 and 279,702

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Solution

The third proportional to 129,127.50 and 279,702 is: 605,860.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,127.50 : 279,702 = 279,702 : x
  2. Step 2: Convert to fraction form
    129,127.50/279,702 = 279,702/x
  3. Step 3: Cross multiply
    129,127.50x = 279,702 × 279,702
  4. Step 4: Simplify right side
    129,127.50x = 78,233,208,804
  5. Step 5: Solve for x
    x = 78,233,208,804/129,127.50
  6. Step 6: Final answer
    x = 605,860.17

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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.