Home / 106,378.11-159,763.59-71,342.37

Finding the Fourth Proportional to 106,378.11, 159,763.59 and 71,342.37

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Solution

The fourth proportional to 106,378.11, 159,763.59 and 71,342.37 is: 107,145.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,378.11 : 159,763.59 = 71,342.37 : x
  2. Step 2: Convert to fraction form
    106,378.11/159,763.59 = 71,342.37/x
  3. Step 3: Cross multiply
    106,378.11x = 159,763.59 × 71,342.37
  4. Step 4: Simplify right side
    106,378.11x = 11,397,913,150.31
  5. Step 5: Solve for x
    x = 11,397,913,150.31/106,378.11
  6. Step 6: Final answer
    x = 107,145.29

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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.