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Finding the Third Proportional to 85,532 and 128,342

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Solution

The third proportional to 85,532 and 128,342 is: 192,579.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,532 : 128,342 = 128,342 : x
  2. Step 2: Convert to fraction form
    85,532/128,342 = 128,342/x
  3. Step 3: Cross multiply
    85,532x = 128,342 × 128,342
  4. Step 4: Simplify right side
    85,532x = 16,471,668,964
  5. Step 5: Solve for x
    x = 16,471,668,964/85,532
  6. Step 6: Final answer
    x = 192,579.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.