Home / 231,935.21-320,015.12-135,080.27

Finding the Fourth Proportional to 231,935.21, 320,015.12 and 135,080.27

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Solution

The fourth proportional to 231,935.21, 320,015.12 and 135,080.27 is: 186,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,935.21 : 320,015.12 = 135,080.27 : x
  2. Step 2: Convert to fraction form
    231,935.21/320,015.12 = 135,080.27/x
  3. Step 3: Cross multiply
    231,935.21x = 320,015.12 × 135,080.27
  4. Step 4: Simplify right side
    231,935.21x = 43,227,728,813.68
  5. Step 5: Solve for x
    x = 43,227,728,813.68/231,935.21
  6. Step 6: Final answer
    x = 186,378.47

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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.