Home / 112,518.44-155,115.24-76,662.56

Finding the Fourth Proportional to 112,518.44, 155,115.24 and 76,662.56

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Solution

The fourth proportional to 112,518.44, 155,115.24 and 76,662.56 is: 105,685.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,518.44 : 155,115.24 = 76,662.56 : x
  2. Step 2: Convert to fraction form
    112,518.44/155,115.24 = 76,662.56/x
  3. Step 3: Cross multiply
    112,518.44x = 155,115.24 × 76,662.56
  4. Step 4: Simplify right side
    112,518.44x = 11,891,531,393.41
  5. Step 5: Solve for x
    x = 11,891,531,393.41/112,518.44
  6. Step 6: Final answer
    x = 105,685.18

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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.