Finding the Fourth Proportional to 131,528.13, 181,465.99 and 80,487.60
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Solution
The fourth proportional to 131,528.13, 181,465.99 and 80,487.60 is: 111,046.68
Step by Step Solution
- Step 1: Write the proportion equation
131,528.13 : 181,465.99 = 80,487.60 : x - Step 2: Convert to fraction form
131,528.13/181,465.99 = 80,487.60/x - Step 3: Cross multiply
131,528.13x = 181,465.99 × 80,487.60 - Step 4: Simplify right side
131,528.13x = 14,605,762,016.72 - Step 5: Solve for x
x = 14,605,762,016.72/131,528.13 - Step 6: Final answer
x = 111,046.68
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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.