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Finding the Third Proportional to 61,650 and 133,128

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Solution

The third proportional to 61,650 and 133,128 is: 287,478.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,650 : 133,128 = 133,128 : x
  2. Step 2: Convert to fraction form
    61,650/133,128 = 133,128/x
  3. Step 3: Cross multiply
    61,650x = 133,128 × 133,128
  4. Step 4: Simplify right side
    61,650x = 17,723,064,384
  5. Step 5: Solve for x
    x = 17,723,064,384/61,650
  6. Step 6: Final answer
    x = 287,478.74

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.