Home / 128,185.74-192,208.14-39,414.60

Finding the Fourth Proportional to 128,185.74, 192,208.14 and 39,414.60

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Solution

The fourth proportional to 128,185.74, 192,208.14 and 39,414.60 is: 59,100.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185.74 : 192,208.14 = 39,414.60 : x
  2. Step 2: Convert to fraction form
    128,185.74/192,208.14 = 39,414.60/x
  3. Step 3: Cross multiply
    128,185.74x = 192,208.14 × 39,414.60
  4. Step 4: Simplify right side
    128,185.74x = 7,575,806,954.84
  5. Step 5: Solve for x
    x = 7,575,806,954.84/128,185.74
  6. Step 6: Final answer
    x = 59,100.23

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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.