Finding the Fourth Proportional to 131,515.66, 181,502.67 and 80,528.14
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Solution
The fourth proportional to 131,515.66, 181,502.67 and 80,528.14 is: 111,135.60
Step by Step Solution
- Step 1: Write the proportion equation
131,515.66 : 181,502.67 = 80,528.14 : x - Step 2: Convert to fraction form
131,515.66/181,502.67 = 80,528.14/x - Step 3: Cross multiply
131,515.66x = 181,502.67 × 80,528.14 - Step 4: Simplify right side
131,515.66x = 14,616,072,420.13 - Step 5: Solve for x
x = 14,616,072,420.13/131,515.66 - Step 6: Final answer
x = 111,135.60
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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.