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Finding the Third Proportional to 67,865 and 147,778

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Solution

The third proportional to 67,865 and 147,778 is: 321,790.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,865 : 147,778 = 147,778 : x
  2. Step 2: Convert to fraction form
    67,865/147,778 = 147,778/x
  3. Step 3: Cross multiply
    67,865x = 147,778 × 147,778
  4. Step 4: Simplify right side
    67,865x = 21,838,337,284
  5. Step 5: Solve for x
    x = 21,838,337,284/67,865
  6. Step 6: Final answer
    x = 321,790.87

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.