Home / 127,286.40-190,905.30-38,542.80

Finding the Fourth Proportional to 127,286.40, 190,905.30 and 38,542.80

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Solution

The fourth proportional to 127,286.40, 190,905.30 and 38,542.80 is: 57,806.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,286.40 : 190,905.30 = 38,542.80 : x
  2. Step 2: Convert to fraction form
    127,286.40/190,905.30 = 38,542.80/x
  3. Step 3: Cross multiply
    127,286.40x = 190,905.30 × 38,542.80
  4. Step 4: Simplify right side
    127,286.40x = 7,358,024,796.84
  5. Step 5: Solve for x
    x = 7,358,024,796.84/127,286.40
  6. Step 6: Final answer
    x = 57,806.84

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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.