Finding the Fourth Proportional to 131,979.62, 182,129.64 and 74,617.99
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Solution
The fourth proportional to 131,979.62, 182,129.64 and 74,617.99 is: 102,971.56
Step by Step Solution
- Step 1: Write the proportion equation
131,979.62 : 182,129.64 = 74,617.99 : x - Step 2: Convert to fraction form
131,979.62/182,129.64 = 74,617.99/x - Step 3: Cross multiply
131,979.62x = 182,129.64 × 74,617.99 - Step 4: Simplify right side
131,979.62x = 13,590,147,656.22 - Step 5: Solve for x
x = 13,590,147,656.22/131,979.62 - Step 6: Final answer
x = 102,971.56
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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.