Home / 112,268.43-154,930.42-76,520.90

Finding the Fourth Proportional to 112,268.43, 154,930.42 and 76,520.90

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Solution

The fourth proportional to 112,268.43, 154,930.42 and 76,520.90 is: 105,598.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,268.43 : 154,930.42 = 76,520.90 : x
  2. Step 2: Convert to fraction form
    112,268.43/154,930.42 = 76,520.90/x
  3. Step 3: Cross multiply
    112,268.43x = 154,930.42 × 76,520.90
  4. Step 4: Simplify right side
    112,268.43x = 11,855,415,658.76
  5. Step 5: Solve for x
    x = 11,855,415,658.76/112,268.43
  6. Step 6: Final answer
    x = 105,598.84

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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.