Finding the Fourth Proportional to 198,668.13, 274,153.08 and 112,625.88
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Solution
The fourth proportional to 198,668.13, 274,153.08 and 112,625.88 is: 155,418.65
Step by Step Solution
- Step 1: Write the proportion equation
198,668.13 : 274,153.08 = 112,625.88 : x - Step 2: Convert to fraction form
198,668.13/274,153.08 = 112,625.88/x - Step 3: Cross multiply
198,668.13x = 274,153.08 × 112,625.88 - Step 4: Simplify right side
198,668.13x = 30,876,731,889.71 - Step 5: Solve for x
x = 30,876,731,889.71/198,668.13 - Step 6: Final answer
x = 155,418.65
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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.