Home / 221,701.30-332,187.15-128,043.70

Finding the Fourth Proportional to 221,701.30, 332,187.15 and 128,043.70

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Solution

The fourth proportional to 221,701.30, 332,187.15 and 128,043.70 is: 191,854.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,701.30 : 332,187.15 = 128,043.70 : x
  2. Step 2: Convert to fraction form
    221,701.30/332,187.15 = 128,043.70/x
  3. Step 3: Cross multiply
    221,701.30x = 332,187.15 × 128,043.70
  4. Step 4: Simplify right side
    221,701.30x = 42,534,471,778.46
  5. Step 5: Solve for x
    x = 42,534,471,778.46/221,701.30
  6. Step 6: Final answer
    x = 191,854.86

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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.