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Finding the Fourth Proportional to 188,765.82, 283,148.43 and 129,421.59

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Solution

The fourth proportional to 188,765.82, 283,148.43 and 129,421.59 is: 194,132.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,765.82 : 283,148.43 = 129,421.59 : x
  2. Step 2: Convert to fraction form
    188,765.82/283,148.43 = 129,421.59/x
  3. Step 3: Cross multiply
    188,765.82x = 283,148.43 × 129,421.59
  4. Step 4: Simplify right side
    188,765.82x = 36,645,520,016.60
  5. Step 5: Solve for x
    x = 36,645,520,016.60/188,765.82
  6. Step 6: Final answer
    x = 194,132.18

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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.