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Finding the Fourth Proportional to 127,202.60, 190,640.70 and 71,042.60

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Solution

The fourth proportional to 127,202.60, 190,640.70 and 71,042.60 is: 106,472.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,202.60 : 190,640.70 = 71,042.60 : x
  2. Step 2: Convert to fraction form
    127,202.60/190,640.70 = 71,042.60/x
  3. Step 3: Cross multiply
    127,202.60x = 190,640.70 × 71,042.60
  4. Step 4: Simplify right side
    127,202.60x = 13,543,610,993.82
  5. Step 5: Solve for x
    x = 13,543,610,993.82/127,202.60
  6. Step 6: Final answer
    x = 106,472.75

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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.