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Finding the Fourth Proportional to 127,842.80, 191,764.20 and 122,010.80

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Solution

The fourth proportional to 127,842.80, 191,764.20 and 122,010.80 is: 183,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,842.80 : 191,764.20 = 122,010.80 : x
  2. Step 2: Convert to fraction form
    127,842.80/191,764.20 = 122,010.80/x
  3. Step 3: Cross multiply
    127,842.80x = 191,764.20 × 122,010.80
  4. Step 4: Simplify right side
    127,842.80x = 23,397,303,453.36
  5. Step 5: Solve for x
    x = 23,397,303,453.36/127,842.80
  6. Step 6: Final answer
    x = 183,016.20

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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.