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Finding the Third Proportional to 121,088 and 188,990

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Solution

The third proportional to 121,088 and 188,990 is: 294,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,088 : 188,990 = 188,990 : x
  2. Step 2: Convert to fraction form
    121,088/188,990 = 188,990/x
  3. Step 3: Cross multiply
    121,088x = 188,990 × 188,990
  4. Step 4: Simplify right side
    121,088x = 35,717,220,100
  5. Step 5: Solve for x
    x = 35,717,220,100/121,088
  6. Step 6: Final answer
    x = 294,969.11

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.