Home / 140,719.70-194,190.86-76,188.42

Finding the Fourth Proportional to 140,719.70, 194,190.86 and 76,188.42

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Solution

The fourth proportional to 140,719.70, 194,190.86 and 76,188.42 is: 105,138.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,719.70 : 194,190.86 = 76,188.42 : x
  2. Step 2: Convert to fraction form
    140,719.70/194,190.86 = 76,188.42/x
  3. Step 3: Cross multiply
    140,719.70x = 194,190.86 × 76,188.42
  4. Step 4: Simplify right side
    140,719.70x = 14,795,094,420.90
  5. Step 5: Solve for x
    x = 14,795,094,420.90/140,719.70
  6. Step 6: Final answer
    x = 105,138.76

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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.