Home / 115,745.05-159,727.31-65,445.85

Finding the Fourth Proportional to 115,745.05, 159,727.31 and 65,445.85

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Solution

The fourth proportional to 115,745.05, 159,727.31 and 65,445.85 is: 90,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,745.05 : 159,727.31 = 65,445.85 : x
  2. Step 2: Convert to fraction form
    115,745.05/159,727.31 = 65,445.85/x
  3. Step 3: Cross multiply
    115,745.05x = 159,727.31 × 65,445.85
  4. Step 4: Simplify right side
    115,745.05x = 10,453,489,243.93
  5. Step 5: Solve for x
    x = 10,453,489,243.93/115,745.05
  6. Step 6: Final answer
    x = 90,314.78

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1.5x scale

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.