Finding the Fourth Proportional to 208,105.74, 287,186.88 and 117,465.54
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Solution
The fourth proportional to 208,105.74, 287,186.88 and 117,465.54 is: 162,102.99
Step by Step Solution
- Step 1: Write the proportion equation
208,105.74 : 287,186.88 = 117,465.54 : x - Step 2: Convert to fraction form
208,105.74/287,186.88 = 117,465.54/x - Step 3: Cross multiply
208,105.74x = 287,186.88 × 117,465.54 - Step 4: Simplify right side
208,105.74x = 33,734,561,940.12 - Step 5: Solve for x
x = 33,734,561,940.12/208,105.74 - Step 6: Final answer
x = 162,102.99
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1.5x scale
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.