Finding the Fourth Proportional to 135,571.19, 187,093.05 and 81,845.72
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Solution
The fourth proportional to 135,571.19, 187,093.05 and 81,845.72 is: 112,949.99
Step by Step Solution
- Step 1: Write the proportion equation
135,571.19 : 187,093.05 = 81,845.72 : x - Step 2: Convert to fraction form
135,571.19/187,093.05 = 81,845.72/x - Step 3: Cross multiply
135,571.19x = 187,093.05 × 81,845.72 - Step 4: Simplify right side
135,571.19x = 15,312,764,448.78 - Step 5: Solve for x
x = 15,312,764,448.78/135,571.19 - Step 6: Final answer
x = 112,949.99
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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.