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Finding the Fourth Proportional to 188,231.36, 259,759.68 and 103,353.80

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Solution

The fourth proportional to 188,231.36, 259,759.68 and 103,353.80 is: 142,628.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,231.36 : 259,759.68 = 103,353.80 : x
  2. Step 2: Convert to fraction form
    188,231.36/259,759.68 = 103,353.80/x
  3. Step 3: Cross multiply
    188,231.36x = 259,759.68 × 103,353.80
  4. Step 4: Simplify right side
    188,231.36x = 26,847,150,014.78
  5. Step 5: Solve for x
    x = 26,847,150,014.78/188,231.36
  6. Step 6: Final answer
    x = 142,628.47

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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.