Home / 138,538.06-207,506.32-85,067.73

Finding the Fourth Proportional to 138,538.06, 207,506.32 and 85,067.73

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Solution

The fourth proportional to 138,538.06, 207,506.32 and 85,067.73 is: 127,416.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,538.06 : 207,506.32 = 85,067.73 : x
  2. Step 2: Convert to fraction form
    138,538.06/207,506.32 = 85,067.73/x
  3. Step 3: Cross multiply
    138,538.06x = 207,506.32 × 85,067.73
  4. Step 4: Simplify right side
    138,538.06x = 17,652,091,390.38
  5. Step 5: Solve for x
    x = 17,652,091,390.38/138,538.06
  6. Step 6: Final answer
    x = 127,416.91

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1.5x scale

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.