Home / 87,109.60-120,238.32-69,236.32

Finding the Fourth Proportional to 87,109.60, 120,238.32 and 69,236.32

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Solution

The fourth proportional to 87,109.60, 120,238.32 and 69,236.32 is: 95,567.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,109.60 : 120,238.32 = 69,236.32 : x
  2. Step 2: Convert to fraction form
    87,109.60/120,238.32 = 69,236.32/x
  3. Step 3: Cross multiply
    87,109.60x = 120,238.32 × 69,236.32
  4. Step 4: Simplify right side
    87,109.60x = 8,324,858,799.78
  5. Step 5: Solve for x
    x = 8,324,858,799.78/87,109.60
  6. Step 6: Final answer
    x = 95,567.64

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1.5x scale

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.