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Finding the Third Proportional to 67,378.50 and 133,663.50

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Solution

The third proportional to 67,378.50 and 133,663.50 is: 265,157.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,378.50 : 133,663.50 = 133,663.50 : x
  2. Step 2: Convert to fraction form
    67,378.50/133,663.50 = 133,663.50/x
  3. Step 3: Cross multiply
    67,378.50x = 133,663.50 × 133,663.50
  4. Step 4: Simplify right side
    67,378.50x = 17,865,931,232.25
  5. Step 5: Solve for x
    x = 17,865,931,232.25/67,378.50
  6. Step 6: Final answer
    x = 265,157.75

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.