Home / 87,078.92-120,147.91-55,236.20

Finding the Fourth Proportional to 87,078.92, 120,147.91 and 55,236.20

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Solution

The fourth proportional to 87,078.92, 120,147.91 and 55,236.20 is: 76,212.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,078.92 : 120,147.91 = 55,236.20 : x
  2. Step 2: Convert to fraction form
    87,078.92/120,147.91 = 55,236.20/x
  3. Step 3: Cross multiply
    87,078.92x = 120,147.91 × 55,236.20
  4. Step 4: Simplify right side
    87,078.92x = 6,636,513,247.51
  5. Step 5: Solve for x
    x = 6,636,513,247.51/87,078.92
  6. Step 6: Final answer
    x = 76,212.63

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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.