Home / 115,769.21-159,786.32-75,410.96

Finding the Fourth Proportional to 115,769.21, 159,786.32 and 75,410.96

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Solution

The fourth proportional to 115,769.21, 159,786.32 and 75,410.96 is: 104,083.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,769.21 : 159,786.32 = 75,410.96 : x
  2. Step 2: Convert to fraction form
    115,769.21/159,786.32 = 75,410.96/x
  3. Step 3: Cross multiply
    115,769.21x = 159,786.32 × 75,410.96
  4. Step 4: Simplify right side
    115,769.21x = 12,049,638,610.08
  5. Step 5: Solve for x
    x = 12,049,638,610.08/115,769.21
  6. Step 6: Final answer
    x = 104,083.28

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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.