Finding the Fourth Proportional to 111,609.09, 153,944.10 and 71,305.02
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Solution
The fourth proportional to 111,609.09, 153,944.10 and 71,305.02 is: 98,352.09
Step by Step Solution
- Step 1: Write the proportion equation
111,609.09 : 153,944.10 = 71,305.02 : x - Step 2: Convert to fraction form
111,609.09/153,944.10 = 71,305.02/x - Step 3: Cross multiply
111,609.09x = 153,944.10 × 71,305.02 - Step 4: Simplify right side
111,609.09x = 10,976,987,129.38 - Step 5: Solve for x
x = 10,976,987,129.38/111,609.09 - Step 6: Final answer
x = 98,352.09
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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.