Home / 197,999.20-296,998.80-127,140.40

Finding the Fourth Proportional to 197,999.20, 296,998.80 and 127,140.40

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Solution

The fourth proportional to 197,999.20, 296,998.80 and 127,140.40 is: 190,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,999.20 : 296,998.80 = 127,140.40 : x
  2. Step 2: Convert to fraction form
    197,999.20/296,998.80 = 127,140.40/x
  3. Step 3: Cross multiply
    197,999.20x = 296,998.80 × 127,140.40
  4. Step 4: Simplify right side
    197,999.20x = 37,760,546,231.52
  5. Step 5: Solve for x
    x = 37,760,546,231.52/197,999.20
  6. Step 6: Final answer
    x = 190,710.60

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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.