Home / 127,290.40-190,911.30-38,546.80

Finding the Fourth Proportional to 127,290.40, 190,911.30 and 38,546.80

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Solution

The fourth proportional to 127,290.40, 190,911.30 and 38,546.80 is: 57,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,290.40 : 190,911.30 = 38,546.80 : x
  2. Step 2: Convert to fraction form
    127,290.40/190,911.30 = 38,546.80/x
  3. Step 3: Cross multiply
    127,290.40x = 190,911.30 × 38,546.80
  4. Step 4: Simplify right side
    127,290.40x = 7,359,019,698.84
  5. Step 5: Solve for x
    x = 7,359,019,698.84/127,290.40
  6. Step 6: Final answer
    x = 57,812.84

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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.