Finding the Fourth Proportional to 111,514.08, 153,958.80 and 77,511.84
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Solution
The fourth proportional to 111,514.08, 153,958.80 and 77,511.84 is: 107,014.56
Step by Step Solution
- Step 1: Write the proportion equation
111,514.08 : 153,958.80 = 77,511.84 : x - Step 2: Convert to fraction form
111,514.08/153,958.80 = 77,511.84/x - Step 3: Cross multiply
111,514.08x = 153,958.80 × 77,511.84 - Step 4: Simplify right side
111,514.08x = 11,933,629,872.19 - Step 5: Solve for x
x = 11,933,629,872.19/111,514.08 - Step 6: Final answer
x = 107,014.56
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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.