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Finding the Third Proportional to 90,904.50 and 129,181.50

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Solution

The third proportional to 90,904.50 and 129,181.50 is: 183,575.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,904.50 : 129,181.50 = 129,181.50 : x
  2. Step 2: Convert to fraction form
    90,904.50/129,181.50 = 129,181.50/x
  3. Step 3: Cross multiply
    90,904.50x = 129,181.50 × 129,181.50
  4. Step 4: Simplify right side
    90,904.50x = 16,687,859,942.25
  5. Step 5: Solve for x
    x = 16,687,859,942.25/90,904.50
  6. Step 6: Final answer
    x = 183,575.73

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.