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Finding the Third Proportional to 97,420 and 130,272

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Solution

The third proportional to 97,420 and 130,272 is: 174,202.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,420 : 130,272 = 130,272 : x
  2. Step 2: Convert to fraction form
    97,420/130,272 = 130,272/x
  3. Step 3: Cross multiply
    97,420x = 130,272 × 130,272
  4. Step 4: Simplify right side
    97,420x = 16,970,793,984
  5. Step 5: Solve for x
    x = 16,970,793,984/97,420
  6. Step 6: Final answer
    x = 174,202.36

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.