Home / 231,173.03-319,012.43-129,198.89

Finding the Fourth Proportional to 231,173.03, 319,012.43 and 129,198.89

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Solution

The fourth proportional to 231,173.03, 319,012.43 and 129,198.89 is: 178,290.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,173.03 : 319,012.43 = 129,198.89 : x
  2. Step 2: Convert to fraction form
    231,173.03/319,012.43 = 129,198.89/x
  3. Step 3: Cross multiply
    231,173.03x = 319,012.43 × 129,198.89
  4. Step 4: Simplify right side
    231,173.03x = 41,216,052,003.74
  5. Step 5: Solve for x
    x = 41,216,052,003.74/231,173.03
  6. Step 6: Final answer
    x = 178,290.92

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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.