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Finding the Third Proportional to 71,803 and 156,985

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Solution

The third proportional to 71,803 and 156,985 is: 343,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,803 : 156,985 = 156,985 : x
  2. Step 2: Convert to fraction form
    71,803/156,985 = 156,985/x
  3. Step 3: Cross multiply
    71,803x = 156,985 × 156,985
  4. Step 4: Simplify right side
    71,803x = 24,644,290,225
  5. Step 5: Solve for x
    x = 24,644,290,225/71,803
  6. Step 6: Final answer
    x = 343,220.90

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.