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Finding the Third Proportional to 78,366.50 and 117,549

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Solution

The third proportional to 78,366.50 and 117,549 is: 176,322.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,366.50 : 117,549 = 117,549 : x
  2. Step 2: Convert to fraction form
    78,366.50/117,549 = 117,549/x
  3. Step 3: Cross multiply
    78,366.50x = 117,549 × 117,549
  4. Step 4: Simplify right side
    78,366.50x = 13,817,767,401
  5. Step 5: Solve for x
    x = 13,817,767,401/78,366.50
  6. Step 6: Final answer
    x = 176,322.38

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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.