Home / 137,988.39-206,786.57-106,278.51

Finding the Fourth Proportional to 137,988.39, 206,786.57 and 106,278.51

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Solution

The fourth proportional to 137,988.39, 206,786.57 and 106,278.51 is: 159,266.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,988.39 : 206,786.57 = 106,278.51 : x
  2. Step 2: Convert to fraction form
    137,988.39/206,786.57 = 106,278.51/x
  3. Step 3: Cross multiply
    137,988.39x = 206,786.57 × 106,278.51
  4. Step 4: Simplify right side
    137,988.39x = 21,976,968,016.22
  5. Step 5: Solve for x
    x = 21,976,968,016.22/137,988.39
  6. Step 6: Final answer
    x = 159,266.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.