Finding the Fourth Proportional to 139,672.63, 192,752.60 and 79,245.82
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Solution
The fourth proportional to 139,672.63, 192,752.60 and 79,245.82 is: 109,361.71
Step by Step Solution
- Step 1: Write the proportion equation
139,672.63 : 192,752.60 = 79,245.82 : x - Step 2: Convert to fraction form
139,672.63/192,752.60 = 79,245.82/x - Step 3: Cross multiply
139,672.63x = 192,752.60 × 79,245.82 - Step 4: Simplify right side
139,672.63x = 15,274,837,844.13 - Step 5: Solve for x
x = 15,274,837,844.13/139,672.63 - Step 6: Final answer
x = 109,361.71
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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.