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Finding the Third Proportional to 76,389 and 164,479.50

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Solution

The third proportional to 76,389 and 164,479.50 is: 354,154.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,389 : 164,479.50 = 164,479.50 : x
  2. Step 2: Convert to fraction form
    76,389/164,479.50 = 164,479.50/x
  3. Step 3: Cross multiply
    76,389x = 164,479.50 × 164,479.50
  4. Step 4: Simplify right side
    76,389x = 27,053,505,920.25
  5. Step 5: Solve for x
    x = 27,053,505,920.25/76,389
  6. Step 6: Final answer
    x = 354,154.47

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.