Home / 107,640.32-161,447.90-28,760.72

Finding the Fourth Proportional to 107,640.32, 161,447.90 and 28,760.72

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Solution

The fourth proportional to 107,640.32, 161,447.90 and 28,760.72 is: 43,137.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,640.32 : 161,447.90 = 28,760.72 : x
  2. Step 2: Convert to fraction form
    107,640.32/161,447.90 = 28,760.72/x
  3. Step 3: Cross multiply
    107,640.32x = 161,447.90 × 28,760.72
  4. Step 4: Simplify right side
    107,640.32x = 4,643,356,895.44
  5. Step 5: Solve for x
    x = 4,643,356,895.44/107,640.32
  6. Step 6: Final answer
    x = 43,137.71

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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.