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Finding the Third Proportional to 90,124 and 130,539

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Solution

The third proportional to 90,124 and 130,539 is: 189,077.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,124 : 130,539 = 130,539 : x
  2. Step 2: Convert to fraction form
    90,124/130,539 = 130,539/x
  3. Step 3: Cross multiply
    90,124x = 130,539 × 130,539
  4. Step 4: Simplify right side
    90,124x = 17,040,430,521
  5. Step 5: Solve for x
    x = 17,040,430,521/90,124
  6. Step 6: Final answer
    x = 189,077.61

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.