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Finding the Third Proportional to 77,878.50 and 102,259.50

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Solution

The third proportional to 77,878.50 and 102,259.50 is: 134,273.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,878.50 : 102,259.50 = 102,259.50 : x
  2. Step 2: Convert to fraction form
    77,878.50/102,259.50 = 102,259.50/x
  3. Step 3: Cross multiply
    77,878.50x = 102,259.50 × 102,259.50
  4. Step 4: Simplify right side
    77,878.50x = 10,457,005,340.25
  5. Step 5: Solve for x
    x = 10,457,005,340.25/77,878.50
  6. Step 6: Final answer
    x = 134,273.33

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.