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Finding the Third Proportional to 79,278.75 and 115,455.38

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Solution

The third proportional to 79,278.75 and 115,455.38 is: 168,140.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,278.75 : 115,455.38 = 115,455.38 : x
  2. Step 2: Convert to fraction form
    79,278.75/115,455.38 = 115,455.38/x
  3. Step 3: Cross multiply
    79,278.75x = 115,455.38 × 115,455.38
  4. Step 4: Simplify right side
    79,278.75x = 13,329,943,616.39
  5. Step 5: Solve for x
    x = 13,329,943,616.39/79,278.75
  6. Step 6: Final answer
    x = 168,140.18

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.