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Finding the Third Proportional to 87,699 and 189,235.50

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Solution

The third proportional to 87,699 and 189,235.50 is: 408,329.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,699 : 189,235.50 = 189,235.50 : x
  2. Step 2: Convert to fraction form
    87,699/189,235.50 = 189,235.50/x
  3. Step 3: Cross multiply
    87,699x = 189,235.50 × 189,235.50
  4. Step 4: Simplify right side
    87,699x = 35,810,074,460.25
  5. Step 5: Solve for x
    x = 35,810,074,460.25/87,699
  6. Step 6: Final answer
    x = 408,329.34

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.