Home / 193,142.55-289,701.12-66,753.39

Finding the Fourth Proportional to 193,142.55, 289,701.12 and 66,753.39

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Solution

The fourth proportional to 193,142.55, 289,701.12 and 66,753.39 is: 100,125.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,142.55 : 289,701.12 = 66,753.39 : x
  2. Step 2: Convert to fraction form
    193,142.55/289,701.12 = 66,753.39/x
  3. Step 3: Cross multiply
    193,142.55x = 289,701.12 × 66,753.39
  4. Step 4: Simplify right side
    193,142.55x = 19,338,531,846.80
  5. Step 5: Solve for x
    x = 19,338,531,846.80/193,142.55
  6. Step 6: Final answer
    x = 100,125.69

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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.