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Finding the Third Proportional to 109,989 and 170,034.75

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Solution

The third proportional to 109,989 and 170,034.75 is: 262,860.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,989 : 170,034.75 = 170,034.75 : x
  2. Step 2: Convert to fraction form
    109,989/170,034.75 = 170,034.75/x
  3. Step 3: Cross multiply
    109,989x = 170,034.75 × 170,034.75
  4. Step 4: Simplify right side
    109,989x = 28,911,816,207.56
  5. Step 5: Solve for x
    x = 28,911,816,207.56/109,989
  6. Step 6: Final answer
    x = 262,860.98

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.