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Finding the Third Proportional to 127,681 and 202,080

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Solution

The third proportional to 127,681 and 202,080 is: 319,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,681 : 202,080 = 202,080 : x
  2. Step 2: Convert to fraction form
    127,681/202,080 = 202,080/x
  3. Step 3: Cross multiply
    127,681x = 202,080 × 202,080
  4. Step 4: Simplify right side
    127,681x = 40,836,326,400
  5. Step 5: Solve for x
    x = 40,836,326,400/127,681
  6. Step 6: Final answer
    x = 319,830.88

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.