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Finding the Third Proportional to 64,407.75 and 138,336.75

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Solution

The third proportional to 64,407.75 and 138,336.75 is: 297,123.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,407.75 : 138,336.75 = 138,336.75 : x
  2. Step 2: Convert to fraction form
    64,407.75/138,336.75 = 138,336.75/x
  3. Step 3: Cross multiply
    64,407.75x = 138,336.75 × 138,336.75
  4. Step 4: Simplify right side
    64,407.75x = 19,137,056,400.56
  5. Step 5: Solve for x
    x = 19,137,056,400.56/64,407.75
  6. Step 6: Final answer
    x = 297,123.50

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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.