Finding the Fourth Proportional to 131,842.53, 181,942.73 and 71,412.99
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Solution
The fourth proportional to 131,842.53, 181,942.73 and 71,412.99 is: 98,549.94
Step by Step Solution
- Step 1: Write the proportion equation
131,842.53 : 181,942.73 = 71,412.99 : x - Step 2: Convert to fraction form
131,842.53/181,942.73 = 71,412.99/x - Step 3: Cross multiply
131,842.53x = 181,942.73 × 71,412.99 - Step 4: Simplify right side
131,842.53x = 12,993,074,219.90 - Step 5: Solve for x
x = 12,993,074,219.90/131,842.53 - Step 6: Final answer
x = 98,549.94
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1.5x scale
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.