Finding the Fourth Proportional to 131,743.08, 181,805.49 and 71,313.53
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Solution
The fourth proportional to 131,743.08, 181,805.49 and 71,313.53 is: 98,412.69
Step by Step Solution
- Step 1: Write the proportion equation
131,743.08 : 181,805.49 = 71,313.53 : x - Step 2: Convert to fraction form
131,743.08/181,805.49 = 71,313.53/x - Step 3: Cross multiply
131,743.08x = 181,805.49 × 71,313.53 - Step 4: Simplify right side
131,743.08x = 12,965,190,356.25 - Step 5: Solve for x
x = 12,965,190,356.25/131,743.08 - Step 6: Final answer
x = 98,412.69
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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.