Finding the Fourth Proportional to 121,936.14, 168,278.40 and 68,217.96
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Solution
The fourth proportional to 121,936.14, 168,278.40 and 68,217.96 is: 94,144.44
Step by Step Solution
- Step 1: Write the proportion equation
121,936.14 : 168,278.40 = 68,217.96 : x - Step 2: Convert to fraction form
121,936.14/168,278.40 = 68,217.96/x - Step 3: Cross multiply
121,936.14x = 168,278.40 × 68,217.96 - Step 4: Simplify right side
121,936.14x = 11,479,609,160.06 - Step 5: Solve for x
x = 11,479,609,160.06/121,936.14 - Step 6: Final answer
x = 94,144.44
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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.