Home / 107,640.36-161,447.85-28,760.67

Finding the Fourth Proportional to 107,640.36, 161,447.85 and 28,760.67

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Solution

The fourth proportional to 107,640.36, 161,447.85 and 28,760.67 is: 43,137.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,640.36 : 161,447.85 = 28,760.67 : x
  2. Step 2: Convert to fraction form
    107,640.36/161,447.85 = 28,760.67/x
  3. Step 3: Cross multiply
    107,640.36x = 161,447.85 × 28,760.67
  4. Step 4: Simplify right side
    107,640.36x = 4,643,348,336.06
  5. Step 5: Solve for x
    x = 4,643,348,336.06/107,640.36
  6. Step 6: Final answer
    x = 43,137.61

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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.