Finding the Fourth Proportional to 111,481.25, 153,971.89 and 73,410.99
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Solution
The fourth proportional to 111,481.25, 153,971.89 and 73,410.99 is: 101,391.31
Step by Step Solution
- Step 1: Write the proportion equation
111,481.25 : 153,971.89 = 73,410.99 : x - Step 2: Convert to fraction form
111,481.25/153,971.89 = 73,410.99/x - Step 3: Cross multiply
111,481.25x = 153,971.89 × 73,410.99 - Step 4: Simplify right side
111,481.25x = 11,303,228,982.24 - Step 5: Solve for x
x = 11,303,228,982.24/111,481.25 - Step 6: Final answer
x = 101,391.31
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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.