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Finding the Third Proportional to 135,439.88 and 210,007.13

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Solution

The third proportional to 135,439.88 and 210,007.13 is: 325,627.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,439.88 : 210,007.13 = 210,007.13 : x
  2. Step 2: Convert to fraction form
    135,439.88/210,007.13 = 210,007.13/x
  3. Step 3: Cross multiply
    135,439.88x = 210,007.13 × 210,007.13
  4. Step 4: Simplify right side
    135,439.88x = 44,102,992,550.77
  5. Step 5: Solve for x
    x = 44,102,992,550.77/135,439.88
  6. Step 6: Final answer
    x = 325,627.83

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.