Home / 138,146.72-190,540.25-95,139.97

Finding the Fourth Proportional to 138,146.72, 190,540.25 and 95,139.97

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Solution

The fourth proportional to 138,146.72, 190,540.25 and 95,139.97 is: 131,222.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,146.72 : 190,540.25 = 95,139.97 : x
  2. Step 2: Convert to fraction form
    138,146.72/190,540.25 = 95,139.97/x
  3. Step 3: Cross multiply
    138,146.72x = 190,540.25 × 95,139.97
  4. Step 4: Simplify right side
    138,146.72x = 18,127,993,073.52
  5. Step 5: Solve for x
    x = 18,127,993,073.52/138,146.72
  6. Step 6: Final answer
    x = 131,222.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.