Home / 128,214.24-192,327.30-39,471.72

Finding the Fourth Proportional to 128,214.24, 192,327.30 and 39,471.72

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Solution

The fourth proportional to 128,214.24, 192,327.30 and 39,471.72 is: 59,209.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,214.24 : 192,327.30 = 39,471.72 : x
  2. Step 2: Convert to fraction form
    128,214.24/192,327.30 = 39,471.72/x
  3. Step 3: Cross multiply
    128,214.24x = 192,327.30 × 39,471.72
  4. Step 4: Simplify right side
    128,214.24x = 7,591,489,333.96
  5. Step 5: Solve for x
    x = 7,591,489,333.96/128,214.24
  6. Step 6: Final answer
    x = 59,209.41

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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.