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Finding the Fourth Proportional to 127,296.72, 190,920.48 and 120,974.48

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Solution

The fourth proportional to 127,296.72, 190,920.48 and 120,974.48 is: 181,438.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,296.72 : 190,920.48 = 120,974.48 : x
  2. Step 2: Convert to fraction form
    127,296.72/190,920.48 = 120,974.48/x
  3. Step 3: Cross multiply
    127,296.72x = 190,920.48 × 120,974.48
  4. Step 4: Simplify right side
    127,296.72x = 23,096,505,789.35
  5. Step 5: Solve for x
    x = 23,096,505,789.35/127,296.72
  6. Step 6: Final answer
    x = 181,438.34

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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.