Home / 156,460.40-215,906.31-91,919.60

Finding the Fourth Proportional to 156,460.40, 215,906.31 and 91,919.60

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Solution

The fourth proportional to 156,460.40, 215,906.31 and 91,919.60 is: 126,843.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,460.40 : 215,906.31 = 91,919.60 : x
  2. Step 2: Convert to fraction form
    156,460.40/215,906.31 = 91,919.60/x
  3. Step 3: Cross multiply
    156,460.40x = 215,906.31 × 91,919.60
  4. Step 4: Simplify right side
    156,460.40x = 19,846,020,573.14
  5. Step 5: Solve for x
    x = 19,846,020,573.14/156,460.40
  6. Step 6: Final answer
    x = 126,843.73

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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.