Home / 128,310.16-192,452.86-39,539.83

Finding the Fourth Proportional to 128,310.16, 192,452.86 and 39,539.83

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Solution

The fourth proportional to 128,310.16, 192,452.86 and 39,539.83 is: 59,305.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,310.16 : 192,452.86 = 39,539.83 : x
  2. Step 2: Convert to fraction form
    128,310.16/192,452.86 = 39,539.83/x
  3. Step 3: Cross multiply
    128,310.16x = 192,452.86 × 39,539.83
  4. Step 4: Simplify right side
    128,310.16x = 7,609,553,367.41
  5. Step 5: Solve for x
    x = 7,609,553,367.41/128,310.16
  6. Step 6: Final answer
    x = 59,305.93

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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.