Home / 137,990.27-190,431.97-77,560.73

Finding the Fourth Proportional to 137,990.27, 190,431.97 and 77,560.73

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Solution

The fourth proportional to 137,990.27, 190,431.97 and 77,560.73 is: 107,036.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,990.27 : 190,431.97 = 77,560.73 : x
  2. Step 2: Convert to fraction form
    137,990.27/190,431.97 = 77,560.73/x
  3. Step 3: Cross multiply
    137,990.27x = 190,431.97 × 77,560.73
  4. Step 4: Simplify right side
    137,990.27x = 14,770,042,176.60
  5. Step 5: Solve for x
    x = 14,770,042,176.60/137,990.27
  6. Step 6: Final answer
    x = 107,036.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.