Finding the Fourth Proportional to 131,715.42, 181,767.70 and 71,286.06
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Solution
The fourth proportional to 131,715.42, 181,767.70 and 71,286.06 is: 98,374.99
Step by Step Solution
- Step 1: Write the proportion equation
131,715.42 : 181,767.70 = 71,286.06 : x - Step 2: Convert to fraction form
131,715.42/181,767.70 = 71,286.06/x - Step 3: Cross multiply
131,715.42x = 181,767.70 × 71,286.06 - Step 4: Simplify right side
131,715.42x = 12,957,503,168.26 - Step 5: Solve for x
x = 12,957,503,168.26/131,715.42 - Step 6: Final answer
x = 98,374.99
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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.