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Finding the Third Proportional to 112,979.81 and 154,920.09

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Solution

The third proportional to 112,979.81 and 154,920.09 is: 212,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,979.81 : 154,920.09 = 154,920.09 : x
  2. Step 2: Convert to fraction form
    112,979.81/154,920.09 = 154,920.09/x
  3. Step 3: Cross multiply
    112,979.81x = 154,920.09 × 154,920.09
  4. Step 4: Simplify right side
    112,979.81x = 24,000,235,447.51
  5. Step 5: Solve for x
    x = 24,000,235,447.51/112,979.81
  6. Step 6: Final answer
    x = 212,429.41

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.