Home / 129,481.50-193,313.94-109,557.84

Finding the Fourth Proportional to 129,481.50, 193,313.94 and 109,557.84

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Solution

The fourth proportional to 129,481.50, 193,313.94 and 109,557.84 is: 163,568.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,481.50 : 193,313.94 = 109,557.84 : x
  2. Step 2: Convert to fraction form
    129,481.50/193,313.94 = 109,557.84/x
  3. Step 3: Cross multiply
    129,481.50x = 193,313.94 × 109,557.84
  4. Step 4: Simplify right side
    129,481.50x = 21,179,057,708.29
  5. Step 5: Solve for x
    x = 21,179,057,708.29/129,481.50
  6. Step 6: Final answer
    x = 163,568.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.