Home / 128,285.48-192,449.82-39,536.36

Finding the Fourth Proportional to 128,285.48, 192,449.82 and 39,536.36

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Solution

The fourth proportional to 128,285.48, 192,449.82 and 39,536.36 is: 59,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,285.48 : 192,449.82 = 39,536.36 : x
  2. Step 2: Convert to fraction form
    128,285.48/192,449.82 = 39,536.36/x
  3. Step 3: Cross multiply
    128,285.48x = 192,449.82 × 39,536.36
  4. Step 4: Simplify right side
    128,285.48x = 7,608,765,365.46
  5. Step 5: Solve for x
    x = 7,608,765,365.46/128,285.48
  6. Step 6: Final answer
    x = 59,311.20

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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.