Home / 106,243.31-159,327.81-31,343.57

Finding the Fourth Proportional to 106,243.31, 159,327.81 and 31,343.57

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Solution

The fourth proportional to 106,243.31, 159,327.81 and 31,343.57 is: 47,004.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,243.31 : 159,327.81 = 31,343.57 : x
  2. Step 2: Convert to fraction form
    106,243.31/159,327.81 = 31,343.57/x
  3. Step 3: Cross multiply
    106,243.31x = 159,327.81 × 31,343.57
  4. Step 4: Simplify right side
    106,243.31x = 4,993,901,569.04
  5. Step 5: Solve for x
    x = 4,993,901,569.04/106,243.31
  6. Step 6: Final answer
    x = 47,004.39

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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.