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Finding the Fourth Proportional to 188,720.22, 283,080.32 and 129,375.98

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Solution

The fourth proportional to 188,720.22, 283,080.32 and 129,375.98 is: 194,063.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,720.22 : 283,080.32 = 129,375.98 : x
  2. Step 2: Convert to fraction form
    188,720.22/283,080.32 = 129,375.98/x
  3. Step 3: Cross multiply
    188,720.22x = 283,080.32 × 129,375.98
  4. Step 4: Simplify right side
    188,720.22x = 36,623,793,818.71
  5. Step 5: Solve for x
    x = 36,623,793,818.71/188,720.22
  6. Step 6: Final answer
    x = 194,063.96

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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.