Finding the Fourth Proportional to 107,640.80, 161,403.60 and 45,240.80
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Solution
The fourth proportional to 107,640.80, 161,403.60 and 45,240.80 is: 67,836.99
Step by Step Solution
- Step 1: Write the proportion equation
107,640.80 : 161,403.60 = 45,240.80 : x - Step 2: Convert to fraction form
107,640.80/161,403.60 = 45,240.80/x - Step 3: Cross multiply
107,640.80x = 161,403.60 × 45,240.80 - Step 4: Simplify right side
107,640.80x = 7,302,027,986.88 - Step 5: Solve for x
x = 7,302,027,986.88/107,640.80 - Step 6: Final answer
x = 67,836.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.