Home / 138,382,610.40-190,936,319.76-82,617,177.12

Finding the Fourth Proportional to 138,382,610.40, 190,936,319.76 and 82,617,177.12

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Solution

The fourth proportional to 138,382,610.40, 190,936,319.76 and 82,617,177.12 is: 113,992,789.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,382,610.40 : 190,936,319.76 = 82,617,177.12 : x
  2. Step 2: Convert to fraction form
    138,382,610.40/190,936,319.76 = 82,617,177.12/x
  3. Step 3: Cross multiply
    138,382,610.40x = 190,936,319.76 × 82,617,177.12
  4. Step 4: Simplify right side
    138,382,610.40x = 15,774,619,748,252,876
  5. Step 5: Solve for x
    x = 15,774,619,748,252,876/138,382,610.40
  6. Step 6: Final answer
    x = 113,992,789.29

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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.