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Finding the Third Proportional to 51,840 and 121,392

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Solution

The third proportional to 51,840 and 121,392 is: 284,259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,840 : 121,392 = 121,392 : x
  2. Step 2: Convert to fraction form
    51,840/121,392 = 121,392/x
  3. Step 3: Cross multiply
    51,840x = 121,392 × 121,392
  4. Step 4: Simplify right side
    51,840x = 14,736,017,664
  5. Step 5: Solve for x
    x = 14,736,017,664/51,840
  6. Step 6: Final answer
    x = 284,259.60

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.