Home / 82,183.32-122,680.40-72,218.76

Finding the Fourth Proportional to 82,183.32, 122,680.40 and 72,218.76

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Solution

The fourth proportional to 82,183.32, 122,680.40 and 72,218.76 is: 107,805.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,183.32 : 122,680.40 = 72,218.76 : x
  2. Step 2: Convert to fraction form
    82,183.32/122,680.40 = 72,218.76/x
  3. Step 3: Cross multiply
    82,183.32x = 122,680.40 × 72,218.76
  4. Step 4: Simplify right side
    82,183.32x = 8,859,826,364.30
  5. Step 5: Solve for x
    x = 8,859,826,364.30/82,183.32
  6. Step 6: Final answer
    x = 107,805.65

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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.