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Finding the Third Proportional to 76,086 and 113,709

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Solution

The third proportional to 76,086 and 113,709 is: 169,935.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,086 : 113,709 = 113,709 : x
  2. Step 2: Convert to fraction form
    76,086/113,709 = 113,709/x
  3. Step 3: Cross multiply
    76,086x = 113,709 × 113,709
  4. Step 4: Simplify right side
    76,086x = 12,929,736,681
  5. Step 5: Solve for x
    x = 12,929,736,681/76,086
  6. Step 6: Final answer
    x = 169,935.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.