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Finding the Third Proportional to 121,488 and 163,464

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Solution

The third proportional to 121,488 and 163,464 is: 219,943.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,488 : 163,464 = 163,464 : x
  2. Step 2: Convert to fraction form
    121,488/163,464 = 163,464/x
  3. Step 3: Cross multiply
    121,488x = 163,464 × 163,464
  4. Step 4: Simplify right side
    121,488x = 26,720,479,296
  5. Step 5: Solve for x
    x = 26,720,479,296/121,488
  6. Step 6: Final answer
    x = 219,943.36

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.