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Finding the Third Proportional to 72,600 and 155,709

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Solution

The third proportional to 72,600 and 155,709 is: 333,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,600 : 155,709 = 155,709 : x
  2. Step 2: Convert to fraction form
    72,600/155,709 = 155,709/x
  3. Step 3: Cross multiply
    72,600x = 155,709 × 155,709
  4. Step 4: Simplify right side
    72,600x = 24,245,292,681
  5. Step 5: Solve for x
    x = 24,245,292,681/72,600
  6. Step 6: Final answer
    x = 333,957.20

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.