Home / 128,644.16-192,984.94-39,904.82

Finding the Fourth Proportional to 128,644.16, 192,984.94 and 39,904.82

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Solution

The fourth proportional to 128,644.16, 192,984.94 and 39,904.82 is: 59,863.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,644.16 : 192,984.94 = 39,904.82 : x
  2. Step 2: Convert to fraction form
    128,644.16/192,984.94 = 39,904.82/x
  3. Step 3: Cross multiply
    128,644.16x = 192,984.94 × 39,904.82
  4. Step 4: Simplify right side
    128,644.16x = 7,701,029,293.41
  5. Step 5: Solve for x
    x = 7,701,029,293.41/128,644.16
  6. Step 6: Final answer
    x = 59,863.03

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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.