Home / 127,145.70-190,499.85-82,749.60

Finding the Fourth Proportional to 127,145.70, 190,499.85 and 82,749.60

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Solution

The fourth proportional to 127,145.70, 190,499.85 and 82,749.60 is: 123,982.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,145.70 : 190,499.85 = 82,749.60 : x
  2. Step 2: Convert to fraction form
    127,145.70/190,499.85 = 82,749.60/x
  3. Step 3: Cross multiply
    127,145.70x = 190,499.85 × 82,749.60
  4. Step 4: Simplify right side
    127,145.70x = 15,763,786,387.56
  5. Step 5: Solve for x
    x = 15,763,786,387.56/127,145.70
  6. Step 6: Final answer
    x = 123,982.06

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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.