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Finding the Fourth Proportional to 193,397.18, 290,109.82 and 80,964.32

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Solution

The fourth proportional to 193,397.18, 290,109.82 and 80,964.32 is: 121,452.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,397.18 : 290,109.82 = 80,964.32 : x
  2. Step 2: Convert to fraction form
    193,397.18/290,109.82 = 80,964.32/x
  3. Step 3: Cross multiply
    193,397.18x = 290,109.82 × 80,964.32
  4. Step 4: Simplify right side
    193,397.18x = 23,488,544,301.62
  5. Step 5: Solve for x
    x = 23,488,544,301.62/193,397.18
  6. Step 6: Final answer
    x = 121,452.36

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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.