Finding the Fourth Proportional to 208,131.98, 287,230.36 and 117,491.18
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Solution
The fourth proportional to 208,131.98, 287,230.36 and 117,491.18 is: 162,142.47
Step by Step Solution
- Step 1: Write the proportion equation
208,131.98 : 287,230.36 = 117,491.18 : x - Step 2: Convert to fraction form
208,131.98/287,230.36 = 117,491.18/x - Step 3: Cross multiply
208,131.98x = 287,230.36 × 117,491.18 - Step 4: Simplify right side
208,131.98x = 33,747,033,928.22 - Step 5: Solve for x
x = 33,747,033,928.22/208,131.98 - Step 6: Final answer
x = 162,142.47
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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.