Finding the Fourth Proportional to 121,928.07, 168,270.83 and 68,218.09
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Solution
The fourth proportional to 121,928.07, 168,270.83 and 68,218.09 is: 94,146.61
Step by Step Solution
- Step 1: Write the proportion equation
121,928.07 : 168,270.83 = 68,218.09 : x - Step 2: Convert to fraction form
121,928.07/168,270.83 = 68,218.09/x - Step 3: Cross multiply
121,928.07x = 168,270.83 × 68,218.09 - Step 4: Simplify right side
121,928.07x = 11,479,114,625.31 - Step 5: Solve for x
x = 11,479,114,625.31/121,928.07 - Step 6: Final answer
x = 94,146.61
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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.