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Finding the Third Proportional to 78,468.75 and 174,372.75

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Solution

The third proportional to 78,468.75 and 174,372.75 is: 387,490.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,468.75 : 174,372.75 = 174,372.75 : x
  2. Step 2: Convert to fraction form
    78,468.75/174,372.75 = 174,372.75/x
  3. Step 3: Cross multiply
    78,468.75x = 174,372.75 × 174,372.75
  4. Step 4: Simplify right side
    78,468.75x = 30,405,855,942.56
  5. Step 5: Solve for x
    x = 30,405,855,942.56/78,468.75
  6. Step 6: Final answer
    x = 387,490.00

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.