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Finding the Third Proportional to 78,726.75 and 154,722.75

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Solution

The third proportional to 78,726.75 and 154,722.75 is: 304,078.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,726.75 : 154,722.75 = 154,722.75 : x
  2. Step 2: Convert to fraction form
    78,726.75/154,722.75 = 154,722.75/x
  3. Step 3: Cross multiply
    78,726.75x = 154,722.75 × 154,722.75
  4. Step 4: Simplify right side
    78,726.75x = 23,939,129,367.56
  5. Step 5: Solve for x
    x = 23,939,129,367.56/78,726.75
  6. Step 6: Final answer
    x = 304,078.72

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.