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Finding the Third Proportional to 76,210.50 and 102,804

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Solution

The third proportional to 76,210.50 and 102,804 is: 138,677.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,210.50 : 102,804 = 102,804 : x
  2. Step 2: Convert to fraction form
    76,210.50/102,804 = 102,804/x
  3. Step 3: Cross multiply
    76,210.50x = 102,804 × 102,804
  4. Step 4: Simplify right side
    76,210.50x = 10,568,662,416
  5. Step 5: Solve for x
    x = 10,568,662,416/76,210.50
  6. Step 6: Final answer
    x = 138,677.25

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.