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Finding the Third Proportional to 74,287 and 156,774

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Solution

The third proportional to 74,287 and 156,774 is: 330,853.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,287 : 156,774 = 156,774 : x
  2. Step 2: Convert to fraction form
    74,287/156,774 = 156,774/x
  3. Step 3: Cross multiply
    74,287x = 156,774 × 156,774
  4. Step 4: Simplify right side
    74,287x = 24,578,087,076
  5. Step 5: Solve for x
    x = 24,578,087,076/74,287
  6. Step 6: Final answer
    x = 330,853.14

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.