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Finding the Fourth Proportional to 127,999.20, 191,998.80 and 110,488.80

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Solution

The fourth proportional to 127,999.20, 191,998.80 and 110,488.80 is: 165,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,999.20 : 191,998.80 = 110,488.80 : x
  2. Step 2: Convert to fraction form
    127,999.20/191,998.80 = 110,488.80/x
  3. Step 3: Cross multiply
    127,999.20x = 191,998.80 × 110,488.80
  4. Step 4: Simplify right side
    127,999.20x = 21,213,717,013.44
  5. Step 5: Solve for x
    x = 21,213,717,013.44/127,999.20
  6. Step 6: Final answer
    x = 165,733.20

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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.