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Finding the Fourth Proportional to 193,639.82, 290,451.83 and 67,308.71

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Solution

The fourth proportional to 193,639.82, 290,451.83 and 67,308.71 is: 100,960.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,639.82 : 290,451.83 = 67,308.71 : x
  2. Step 2: Convert to fraction form
    193,639.82/290,451.83 = 67,308.71/x
  3. Step 3: Cross multiply
    193,639.82x = 290,451.83 × 67,308.71
  4. Step 4: Simplify right side
    193,639.82x = 19,549,936,205.64
  5. Step 5: Solve for x
    x = 19,549,936,205.64/193,639.82
  6. Step 6: Final answer
    x = 100,960.31

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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.