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Finding the Third Proportional to 74,709 and 112,143

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Solution

The third proportional to 74,709 and 112,143 is: 168,333.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,709 : 112,143 = 112,143 : x
  2. Step 2: Convert to fraction form
    74,709/112,143 = 112,143/x
  3. Step 3: Cross multiply
    74,709x = 112,143 × 112,143
  4. Step 4: Simplify right side
    74,709x = 12,576,052,449
  5. Step 5: Solve for x
    x = 12,576,052,449/74,709
  6. Step 6: Final answer
    x = 168,333.83

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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.