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Finding the Third Proportional to 78,416 and 117,802

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Solution

The third proportional to 78,416 and 117,802 is: 176,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,416 : 117,802 = 117,802 : x
  2. Step 2: Convert to fraction form
    78,416/117,802 = 117,802/x
  3. Step 3: Cross multiply
    78,416x = 117,802 × 117,802
  4. Step 4: Simplify right side
    78,416x = 13,877,311,204
  5. Step 5: Solve for x
    x = 13,877,311,204/78,416
  6. Step 6: Final answer
    x = 176,970.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.