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Finding the Fourth Proportional to 161,007.72, 222,191.48 and 100,613.48

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Solution

The fourth proportional to 161,007.72, 222,191.48 and 100,613.48 is: 138,847.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,007.72 : 222,191.48 = 100,613.48 : x
  2. Step 2: Convert to fraction form
    161,007.72/222,191.48 = 100,613.48/x
  3. Step 3: Cross multiply
    161,007.72x = 222,191.48 × 100,613.48
  4. Step 4: Simplify right side
    161,007.72x = 22,355,458,029.15
  5. Step 5: Solve for x
    x = 22,355,458,029.15/161,007.72
  6. Step 6: Final answer
    x = 138,847.12

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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.