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Finding the Third Proportional to 121,768 and 191,065

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Solution

The third proportional to 121,768 and 191,065 is: 299,798.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,768 : 191,065 = 191,065 : x
  2. Step 2: Convert to fraction form
    121,768/191,065 = 191,065/x
  3. Step 3: Cross multiply
    121,768x = 191,065 × 191,065
  4. Step 4: Simplify right side
    121,768x = 36,505,834,225
  5. Step 5: Solve for x
    x = 36,505,834,225/121,768
  6. Step 6: Final answer
    x = 299,798.26

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.