Home / 127,245.60-190,868.40-121,996.80

Finding the Fourth Proportional to 127,245.60, 190,868.40 and 121,996.80

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Solution

The fourth proportional to 127,245.60, 190,868.40 and 121,996.80 is: 182,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,245.60 : 190,868.40 = 121,996.80 : x
  2. Step 2: Convert to fraction form
    127,245.60/190,868.40 = 121,996.80/x
  3. Step 3: Cross multiply
    127,245.60x = 190,868.40 × 121,996.80
  4. Step 4: Simplify right side
    127,245.60x = 23,285,334,021.12
  5. Step 5: Solve for x
    x = 23,285,334,021.12/127,245.60
  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.