Home / 190,128.60-262,481.40-129,789.18

Finding the Fourth Proportional to 190,128.60, 262,481.40 and 129,789.18

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Solution

The fourth proportional to 190,128.60, 262,481.40 and 129,789.18 is: 179,180.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,128.60 : 262,481.40 = 129,789.18 : x
  2. Step 2: Convert to fraction form
    190,128.60/262,481.40 = 129,789.18/x
  3. Step 3: Cross multiply
    190,128.60x = 262,481.40 × 129,789.18
  4. Step 4: Simplify right side
    190,128.60x = 34,067,245,671.25
  5. Step 5: Solve for x
    x = 34,067,245,671.25/190,128.60
  6. Step 6: Final answer
    x = 179,180.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.