Finding the Fourth Proportional to 208,126.88, 287,205.12 and 122,074.08
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Solution
The fourth proportional to 208,126.88, 287,205.12 and 122,074.08 is: 168,456.38
Step by Step Solution
- Step 1: Write the proportion equation
208,126.88 : 287,205.12 = 122,074.08 : x - Step 2: Convert to fraction form
208,126.88/287,205.12 = 122,074.08/x - Step 3: Cross multiply
208,126.88x = 287,205.12 × 122,074.08 - Step 4: Simplify right side
208,126.88x = 35,060,300,795.29 - Step 5: Solve for x
x = 35,060,300,795.29/208,126.88 - Step 6: Final answer
x = 168,456.38
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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.