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Finding the Third Proportional to 77,897.81 and 127,188

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Solution

The third proportional to 77,897.81 and 127,188 is: 207,666.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,897.81 : 127,188 = 127,188 : x
  2. Step 2: Convert to fraction form
    77,897.81/127,188 = 127,188/x
  3. Step 3: Cross multiply
    77,897.81x = 127,188 × 127,188
  4. Step 4: Simplify right side
    77,897.81x = 16,176,787,344
  5. Step 5: Solve for x
    x = 16,176,787,344/77,897.81
  6. Step 6: Final answer
    x = 207,666.77

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.