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Finding the Third Proportional to 84,126 and 130,239

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Solution

The third proportional to 84,126 and 130,239 is: 201,628.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,126 : 130,239 = 130,239 : x
  2. Step 2: Convert to fraction form
    84,126/130,239 = 130,239/x
  3. Step 3: Cross multiply
    84,126x = 130,239 × 130,239
  4. Step 4: Simplify right side
    84,126x = 16,962,197,121
  5. Step 5: Solve for x
    x = 16,962,197,121/84,126
  6. Step 6: Final answer
    x = 201,628.48

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.