Finding the Fourth Proportional to 121,843.93, 167,979.27 and 85,495.99
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Solution
The fourth proportional to 121,843.93, 167,979.27 and 85,495.99 is: 117,868.44
Step by Step Solution
- Step 1: Write the proportion equation
121,843.93 : 167,979.27 = 85,495.99 : x - Step 2: Convert to fraction form
121,843.93/167,979.27 = 85,495.99/x - Step 3: Cross multiply
121,843.93x = 167,979.27 × 85,495.99 - Step 4: Simplify right side
121,843.93x = 14,361,553,988.13 - Step 5: Solve for x
x = 14,361,553,988.13/121,843.93 - Step 6: Final answer
x = 117,868.44
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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.