Finding the Fourth Proportional to 121,707.87, 167,953.52 and 66,514.97
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Solution
The fourth proportional to 121,707.87, 167,953.52 and 66,514.97 is: 91,788.84
Step by Step Solution
- Step 1: Write the proportion equation
121,707.87 : 167,953.52 = 66,514.97 : x - Step 2: Convert to fraction form
121,707.87/167,953.52 = 66,514.97/x - Step 3: Cross multiply
121,707.87x = 167,953.52 × 66,514.97 - Step 4: Simplify right side
121,707.87x = 11,171,423,556.22 - Step 5: Solve for x
x = 11,171,423,556.22/121,707.87 - Step 6: Final answer
x = 91,788.84
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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.