Home / 140,660.97-194,110.45-76,128.66

Finding the Fourth Proportional to 140,660.97, 194,110.45 and 76,128.66

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Solution

The fourth proportional to 140,660.97, 194,110.45 and 76,128.66 is: 105,056.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,660.97 : 194,110.45 = 76,128.66 : x
  2. Step 2: Convert to fraction form
    140,660.97/194,110.45 = 76,128.66/x
  3. Step 3: Cross multiply
    140,660.97x = 194,110.45 × 76,128.66
  4. Step 4: Simplify right side
    140,660.97x = 14,777,368,260.18
  5. Step 5: Solve for x
    x = 14,777,368,260.18/140,660.97
  6. Step 6: Final answer
    x = 105,056.64

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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.