Home / 86,198.19-129,243.42-38,803.47

Finding the Fourth Proportional to 86,198.19, 129,243.42 and 38,803.47

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Solution

The fourth proportional to 86,198.19, 129,243.42 and 38,803.47 is: 58,180.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,198.19 : 129,243.42 = 38,803.47 : x
  2. Step 2: Convert to fraction form
    86,198.19/129,243.42 = 38,803.47/x
  3. Step 3: Cross multiply
    86,198.19x = 129,243.42 × 38,803.47
  4. Step 4: Simplify right side
    86,198.19x = 5,015,093,170.67
  5. Step 5: Solve for x
    x = 5,015,093,170.67/86,198.19
  6. Step 6: Final answer
    x = 58,180.96

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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.