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Finding the Fourth Proportional to 127,175.20, 190,849.20 and 71,015.20

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Solution

The fourth proportional to 127,175.20, 190,849.20 and 71,015.20 is: 106,571.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,175.20 : 190,849.20 = 71,015.20 : x
  2. Step 2: Convert to fraction form
    127,175.20/190,849.20 = 71,015.20/x
  3. Step 3: Cross multiply
    127,175.20x = 190,849.20 × 71,015.20
  4. Step 4: Simplify right side
    127,175.20x = 13,553,194,107.84
  5. Step 5: Solve for x
    x = 13,553,194,107.84/127,175.20
  6. Step 6: Final answer
    x = 106,571.05

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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.