Home / 115,379.68-159,238.56-66,971.26

Finding the Fourth Proportional to 115,379.68, 159,238.56 and 66,971.26

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Solution

The fourth proportional to 115,379.68, 159,238.56 and 66,971.26 is: 92,428.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,379.68 : 159,238.56 = 66,971.26 : x
  2. Step 2: Convert to fraction form
    115,379.68/159,238.56 = 66,971.26/x
  3. Step 3: Cross multiply
    115,379.68x = 159,238.56 × 66,971.26
  4. Step 4: Simplify right side
    115,379.68x = 10,664,407,003.79
  5. Step 5: Solve for x
    x = 10,664,407,003.79/115,379.68
  6. Step 6: Final answer
    x = 92,428.81

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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.