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Finding the Third Proportional to 77,143 and 156,433

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Solution

The third proportional to 77,143 and 156,433 is: 317,219.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,143 : 156,433 = 156,433 : x
  2. Step 2: Convert to fraction form
    77,143/156,433 = 156,433/x
  3. Step 3: Cross multiply
    77,143x = 156,433 × 156,433
  4. Step 4: Simplify right side
    77,143x = 24,471,283,489
  5. Step 5: Solve for x
    x = 24,471,283,489/77,143
  6. Step 6: Final answer
    x = 317,219.75

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.