Home / 131,286.53-181,173.96-77,570.43

Finding the Fourth Proportional to 131,286.53, 181,173.96 and 77,570.43

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Solution

The fourth proportional to 131,286.53, 181,173.96 and 77,570.43 is: 107,046.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,286.53 : 181,173.96 = 77,570.43 : x
  2. Step 2: Convert to fraction form
    131,286.53/181,173.96 = 77,570.43/x
  3. Step 3: Cross multiply
    131,286.53x = 181,173.96 × 77,570.43
  4. Step 4: Simplify right side
    131,286.53x = 14,053,741,982.00
  5. Step 5: Solve for x
    x = 14,053,741,982.00/131,286.53
  6. Step 6: Final answer
    x = 107,046.34

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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.