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Finding the Third Proportional to 100,178 and 156,011

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Solution

The third proportional to 100,178 and 156,011 is: 242,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,178 : 156,011 = 156,011 : x
  2. Step 2: Convert to fraction form
    100,178/156,011 = 156,011/x
  3. Step 3: Cross multiply
    100,178x = 156,011 × 156,011
  4. Step 4: Simplify right side
    100,178x = 24,339,432,121
  5. Step 5: Solve for x
    x = 24,339,432,121/100,178
  6. Step 6: Final answer
    x = 242,961.85

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.