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Finding the Third Proportional to 84,028 and 130,172

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Solution

The third proportional to 84,028 and 130,172 is: 201,655.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,028 : 130,172 = 130,172 : x
  2. Step 2: Convert to fraction form
    84,028/130,172 = 130,172/x
  3. Step 3: Cross multiply
    84,028x = 130,172 × 130,172
  4. Step 4: Simplify right side
    84,028x = 16,944,749,584
  5. Step 5: Solve for x
    x = 16,944,749,584/84,028
  6. Step 6: Final answer
    x = 201,655.99

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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.