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Finding the Fourth Proportional to 127,179.20, 190,855.20 and 71,019.20

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Solution

The fourth proportional to 127,179.20, 190,855.20 and 71,019.20 is: 106,577.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,179.20 : 190,855.20 = 71,019.20 : x
  2. Step 2: Convert to fraction form
    127,179.20/190,855.20 = 71,019.20/x
  3. Step 3: Cross multiply
    127,179.20x = 190,855.20 × 71,019.20
  4. Step 4: Simplify right side
    127,179.20x = 13,554,383,619.84
  5. Step 5: Solve for x
    x = 13,554,383,619.84/127,179.20
  6. Step 6: Final answer
    x = 106,577.05

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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.