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Finding the Fourth Proportional to 199,089.78, 274,743.84 and 109,665.78

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Solution

The fourth proportional to 199,089.78, 274,743.84 and 109,665.78 is: 151,338.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,089.78 : 274,743.84 = 109,665.78 : x
  2. Step 2: Convert to fraction form
    199,089.78/274,743.84 = 109,665.78/x
  3. Step 3: Cross multiply
    199,089.78x = 274,743.84 × 109,665.78
  4. Step 4: Simplify right side
    199,089.78x = 30,129,997,513.80
  5. Step 5: Solve for x
    x = 30,129,997,513.80/199,089.78
  6. Step 6: Final answer
    x = 151,338.75

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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.