Home / 112,884.44-155,664.24-78,880.54

Finding the Fourth Proportional to 112,884.44, 155,664.24 and 78,880.54

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Solution

The fourth proportional to 112,884.44, 155,664.24 and 78,880.54 is: 108,773.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,884.44 : 155,664.24 = 78,880.54 : x
  2. Step 2: Convert to fraction form
    112,884.44/155,664.24 = 78,880.54/x
  3. Step 3: Cross multiply
    112,884.44x = 155,664.24 × 78,880.54
  4. Step 4: Simplify right side
    112,884.44x = 12,278,878,920.73
  5. Step 5: Solve for x
    x = 12,278,878,920.73/112,884.44
  6. Step 6: Final answer
    x = 108,773.88

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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.