Finding the Fourth Proportional to 136,543.26, 188,430.09 and 79,193.64
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Solution
The fourth proportional to 136,543.26, 188,430.09 and 79,193.64 is: 109,287.45
Step by Step Solution
- Step 1: Write the proportion equation
136,543.26 : 188,430.09 = 79,193.64 : x - Step 2: Convert to fraction form
136,543.26/188,430.09 = 79,193.64/x - Step 3: Cross multiply
136,543.26x = 188,430.09 × 79,193.64 - Step 4: Simplify right side
136,543.26x = 14,922,464,712.63 - Step 5: Solve for x
x = 14,922,464,712.63/136,543.26 - Step 6: Final answer
x = 109,287.45
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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.