Finding the Fourth Proportional to 107,431.80, 161,147.70 and 54,943.80
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Solution
The fourth proportional to 107,431.80, 161,147.70 and 54,943.80 is: 82,415.70
Step by Step Solution
- Step 1: Write the proportion equation
107,431.80 : 161,147.70 = 54,943.80 : x - Step 2: Convert to fraction form
107,431.80/161,147.70 = 54,943.80/x - Step 3: Cross multiply
107,431.80x = 161,147.70 × 54,943.80 - Step 4: Simplify right side
107,431.80x = 8,854,066,999.26 - Step 5: Solve for x
x = 8,854,066,999.26/107,431.80 - Step 6: Final answer
x = 82,415.70
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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.