Home / 127,828.80-191,743.20-121,996.80

Finding the Fourth Proportional to 127,828.80, 191,743.20 and 121,996.80

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Solution

The fourth proportional to 127,828.80, 191,743.20 and 121,996.80 is: 182,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,828.80 : 191,743.20 = 121,996.80 : x
  2. Step 2: Convert to fraction form
    127,828.80/191,743.20 = 121,996.80/x
  3. Step 3: Cross multiply
    127,828.80x = 191,743.20 × 121,996.80
  4. Step 4: Simplify right side
    127,828.80x = 23,392,056,821.76
  5. Step 5: Solve for x
    x = 23,392,056,821.76/127,828.80
  6. Step 6: Final answer
    x = 182,995.20

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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.