Finding the Fourth Proportional to 136,543.74, 188,430.76 and 79,194.12
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Solution
The fourth proportional to 136,543.74, 188,430.76 and 79,194.12 is: 109,288.12
Step by Step Solution
- Step 1: Write the proportion equation
136,543.74 : 188,430.76 = 79,194.12 : x - Step 2: Convert to fraction form
136,543.74/188,430.76 = 79,194.12/x - Step 3: Cross multiply
136,543.74x = 188,430.76 × 79,194.12 - Step 4: Simplify right side
136,543.74x = 14,922,608,219.13 - Step 5: Solve for x
x = 14,922,608,219.13/136,543.74 - Step 6: Final answer
x = 109,288.12
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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.