Home / 127,839.20-191,845.20-71,679.20

Finding the Fourth Proportional to 127,839.20, 191,845.20 and 71,679.20

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Solution

The fourth proportional to 127,839.20, 191,845.20 and 71,679.20 is: 107,567.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,839.20 : 191,845.20 = 71,679.20 : x
  2. Step 2: Convert to fraction form
    127,839.20/191,845.20 = 71,679.20/x
  3. Step 3: Cross multiply
    127,839.20x = 191,845.20 × 71,679.20
  4. Step 4: Simplify right side
    127,839.20x = 13,751,310,459.84
  5. Step 5: Solve for x
    x = 13,751,310,459.84/127,839.20
  6. Step 6: Final answer
    x = 107,567.24

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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.