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Finding the Third Proportional to 90,402.75 and 172,600.88

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Solution

The third proportional to 90,402.75 and 172,600.88 is: 329,537.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,402.75 : 172,600.88 = 172,600.88 : x
  2. Step 2: Convert to fraction form
    90,402.75/172,600.88 = 172,600.88/x
  3. Step 3: Cross multiply
    90,402.75x = 172,600.88 × 172,600.88
  4. Step 4: Simplify right side
    90,402.75x = 29,791,062,050.77
  5. Step 5: Solve for x
    x = 29,791,062,050.77/90,402.75
  6. Step 6: Final answer
    x = 329,537.12

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.