Home / 117,778.97-162,520.22-79,621.55

Finding the Fourth Proportional to 117,778.97, 162,520.22 and 79,621.55

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Solution

The fourth proportional to 117,778.97, 162,520.22 and 79,621.55 is: 109,867.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,778.97 : 162,520.22 = 79,621.55 : x
  2. Step 2: Convert to fraction form
    117,778.97/162,520.22 = 79,621.55/x
  3. Step 3: Cross multiply
    117,778.97x = 162,520.22 × 79,621.55
  4. Step 4: Simplify right side
    117,778.97x = 12,940,111,818.64
  5. Step 5: Solve for x
    x = 12,940,111,818.64/117,778.97
  6. Step 6: Final answer
    x = 109,867.76

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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.