Finding the Fourth Proportional to 153,791.24, 212,231.94 and 86,723.24
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Solution
The fourth proportional to 153,791.24, 212,231.94 and 86,723.24 is: 119,678.09
Step by Step Solution
- Step 1: Write the proportion equation
153,791.24 : 212,231.94 = 86,723.24 : x - Step 2: Convert to fraction form
153,791.24/212,231.94 = 86,723.24/x - Step 3: Cross multiply
153,791.24x = 212,231.94 × 86,723.24 - Step 4: Simplify right side
153,791.24x = 18,405,441,468.29 - Step 5: Solve for x
x = 18,405,441,468.29/153,791.24 - Step 6: Final answer
x = 119,678.09
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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.