Finding the Fourth Proportional to 131,678.36, 181,715.55 and 71,250.07
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Solution
The fourth proportional to 131,678.36, 181,715.55 and 71,250.07 is: 98,324.78
Step by Step Solution
- Step 1: Write the proportion equation
131,678.36 : 181,715.55 = 71,250.07 : x - Step 2: Convert to fraction form
131,678.36/181,715.55 = 71,250.07/x - Step 3: Cross multiply
131,678.36x = 181,715.55 × 71,250.07 - Step 4: Simplify right side
131,678.36x = 12,947,245,422.07 - Step 5: Solve for x
x = 12,947,245,422.07/131,678.36 - Step 6: Final answer
x = 98,324.78
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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.