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Finding the Third Proportional to 121,347 and 177,403.50

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Solution

The third proportional to 121,347 and 177,403.50 is: 259,355.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,347 : 177,403.50 = 177,403.50 : x
  2. Step 2: Convert to fraction form
    121,347/177,403.50 = 177,403.50/x
  3. Step 3: Cross multiply
    121,347x = 177,403.50 × 177,403.50
  4. Step 4: Simplify right side
    121,347x = 31,472,001,812.25
  5. Step 5: Solve for x
    x = 31,472,001,812.25/121,347
  6. Step 6: Final answer
    x = 259,355.42

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.