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Finding the Fourth Proportional to 188,073.60, 259,540.48 and 103,188.80

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Solution

The fourth proportional to 188,073.60, 259,540.48 and 103,188.80 is: 142,399.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,073.60 : 259,540.48 = 103,188.80 : x
  2. Step 2: Convert to fraction form
    188,073.60/259,540.48 = 103,188.80/x
  3. Step 3: Cross multiply
    188,073.60x = 259,540.48 × 103,188.80
  4. Step 4: Simplify right side
    188,073.60x = 26,781,670,682.62
  5. Step 5: Solve for x
    x = 26,781,670,682.62/188,073.60
  6. Step 6: Final answer
    x = 142,399.95

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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.