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Finding the Third Proportional to 85,090 and 121,794

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Solution

The third proportional to 85,090 and 121,794 is: 174,330.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,090 : 121,794 = 121,794 : x
  2. Step 2: Convert to fraction form
    85,090/121,794 = 121,794/x
  3. Step 3: Cross multiply
    85,090x = 121,794 × 121,794
  4. Step 4: Simplify right side
    85,090x = 14,833,778,436
  5. Step 5: Solve for x
    x = 14,833,778,436/85,090
  6. Step 6: Final answer
    x = 174,330.46

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.