Finding the Fourth Proportional to 121,936.62, 168,279.08 and 68,218.44
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Solution
The fourth proportional to 121,936.62, 168,279.08 and 68,218.44 is: 94,145.11
Step by Step Solution
- Step 1: Write the proportion equation
121,936.62 : 168,279.08 = 68,218.44 : x - Step 2: Convert to fraction form
121,936.62/168,279.08 = 68,218.44/x - Step 3: Cross multiply
121,936.62x = 168,279.08 × 68,218.44 - Step 4: Simplify right side
121,936.62x = 11,479,736,322.24 - Step 5: Solve for x
x = 11,479,736,322.24/121,936.62 - Step 6: Final answer
x = 94,145.11
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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.