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Finding the Third Proportional to 77,728.50 and 114,951.75

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Solution

The third proportional to 77,728.50 and 114,951.75 is: 170,000.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,728.50 : 114,951.75 = 114,951.75 : x
  2. Step 2: Convert to fraction form
    77,728.50/114,951.75 = 114,951.75/x
  3. Step 3: Cross multiply
    77,728.50x = 114,951.75 × 114,951.75
  4. Step 4: Simplify right side
    77,728.50x = 13,213,904,828.06
  5. Step 5: Solve for x
    x = 13,213,904,828.06/77,728.50
  6. Step 6: Final answer
    x = 170,000.77

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.