Home / 128,635.44-192,971.28-39,896.16

Finding the Fourth Proportional to 128,635.44, 192,971.28 and 39,896.16

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Solution

The fourth proportional to 128,635.44, 192,971.28 and 39,896.16 is: 59,849.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,635.44 : 192,971.28 = 39,896.16 : x
  2. Step 2: Convert to fraction form
    128,635.44/192,971.28 = 39,896.16/x
  3. Step 3: Cross multiply
    128,635.44x = 192,971.28 × 39,896.16
  4. Step 4: Simplify right side
    128,635.44x = 7,698,813,062.28
  5. Step 5: Solve for x
    x = 7,698,813,062.28/128,635.44
  6. Step 6: Final answer
    x = 59,849.86

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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.