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Finding the Third Proportional to 77,341.50 and 115,965

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Solution

The third proportional to 77,341.50 and 115,965 is: 173,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,341.50 : 115,965 = 115,965 : x
  2. Step 2: Convert to fraction form
    77,341.50/115,965 = 115,965/x
  3. Step 3: Cross multiply
    77,341.50x = 115,965 × 115,965
  4. Step 4: Simplify right side
    77,341.50x = 13,447,881,225
  5. Step 5: Solve for x
    x = 13,447,881,225/77,341.50
  6. Step 6: Final answer
    x = 173,876.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.