Home / 128,219.20-192,309.34-45,093.76

Finding the Fourth Proportional to 128,219.20, 192,309.34 and 45,093.76

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Solution

The fourth proportional to 128,219.20, 192,309.34 and 45,093.76 is: 67,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,219.20 : 192,309.34 = 45,093.76 : x
  2. Step 2: Convert to fraction form
    128,219.20/192,309.34 = 45,093.76/x
  3. Step 3: Cross multiply
    128,219.20x = 192,309.34 × 45,093.76
  4. Step 4: Simplify right side
    128,219.20x = 8,671,951,223.72
  5. Step 5: Solve for x
    x = 8,671,951,223.72/128,219.20
  6. Step 6: Final answer
    x = 67,633.80

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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.