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Finding the Third Proportional to 63,445.50 and 135,123

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Solution

The third proportional to 63,445.50 and 135,123 is: 287,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,445.50 : 135,123 = 135,123 : x
  2. Step 2: Convert to fraction form
    63,445.50/135,123 = 135,123/x
  3. Step 3: Cross multiply
    63,445.50x = 135,123 × 135,123
  4. Step 4: Simplify right side
    63,445.50x = 18,258,225,129
  5. Step 5: Solve for x
    x = 18,258,225,129/63,445.50
  6. Step 6: Final answer
    x = 287,778.10

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.