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Finding the Third Proportional to 72,127 and 156,419

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Solution

The third proportional to 72,127 and 156,419 is: 339,219.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,127 : 156,419 = 156,419 : x
  2. Step 2: Convert to fraction form
    72,127/156,419 = 156,419/x
  3. Step 3: Cross multiply
    72,127x = 156,419 × 156,419
  4. Step 4: Simplify right side
    72,127x = 24,466,903,561
  5. Step 5: Solve for x
    x = 24,466,903,561/72,127
  6. Step 6: Final answer
    x = 339,219.76

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.