Home / 221,686.30-332,529.45-128,082.70

Finding the Fourth Proportional to 221,686.30, 332,529.45 and 128,082.70

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Solution

The fourth proportional to 221,686.30, 332,529.45 and 128,082.70 is: 192,124.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,686.30 : 332,529.45 = 128,082.70 : x
  2. Step 2: Convert to fraction form
    221,686.30/332,529.45 = 128,082.70/x
  3. Step 3: Cross multiply
    221,686.30x = 332,529.45 × 128,082.70
  4. Step 4: Simplify right side
    221,686.30x = 42,591,269,785.52
  5. Step 5: Solve for x
    x = 42,591,269,785.52/221,686.30
  6. Step 6: Final answer
    x = 192,124.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.