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Finding the Third Proportional to 57,394 and 121,628

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Solution

The third proportional to 57,394 and 121,628 is: 257,751.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,394 : 121,628 = 121,628 : x
  2. Step 2: Convert to fraction form
    57,394/121,628 = 121,628/x
  3. Step 3: Cross multiply
    57,394x = 121,628 × 121,628
  4. Step 4: Simplify right side
    57,394x = 14,793,370,384
  5. Step 5: Solve for x
    x = 14,793,370,384/57,394
  6. Step 6: Final answer
    x = 257,751.17

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.