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Finding the Third Proportional to 115,692.75 and 172,080

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Solution

The third proportional to 115,692.75 and 172,080 is: 255,949.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,692.75 : 172,080 = 172,080 : x
  2. Step 2: Convert to fraction form
    115,692.75/172,080 = 172,080/x
  3. Step 3: Cross multiply
    115,692.75x = 172,080 × 172,080
  4. Step 4: Simplify right side
    115,692.75x = 29,611,526,400
  5. Step 5: Solve for x
    x = 29,611,526,400/115,692.75
  6. Step 6: Final answer
    x = 255,949.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.