Home / 112,120.35-168,176.88-45,540.78

Finding the Fourth Proportional to 112,120.35, 168,176.88 and 45,540.78

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Solution

The fourth proportional to 112,120.35, 168,176.88 and 45,540.78 is: 68,309.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,120.35 : 168,176.88 = 45,540.78 : x
  2. Step 2: Convert to fraction form
    112,120.35/168,176.88 = 45,540.78/x
  3. Step 3: Cross multiply
    112,120.35x = 168,176.88 × 45,540.78
  4. Step 4: Simplify right side
    112,120.35x = 7,658,906,293.17
  5. Step 5: Solve for x
    x = 7,658,906,293.17/112,120.35
  6. Step 6: Final answer
    x = 68,309.69

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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.