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Finding the Third Proportional to 121,710.75 and 187,193.25

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Solution

The third proportional to 121,710.75 and 187,193.25 is: 287,906.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,710.75 : 187,193.25 = 187,193.25 : x
  2. Step 2: Convert to fraction form
    121,710.75/187,193.25 = 187,193.25/x
  3. Step 3: Cross multiply
    121,710.75x = 187,193.25 × 187,193.25
  4. Step 4: Simplify right side
    121,710.75x = 35,041,312,845.56
  5. Step 5: Solve for x
    x = 35,041,312,845.56/121,710.75
  6. Step 6: Final answer
    x = 287,906.47

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.