Finding the Fourth Proportional to 146,918.21, 220,191.41 and 72,020.75
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Solution
The fourth proportional to 146,918.21, 220,191.41 and 72,020.75 is: 107,939.99
Step by Step Solution
- Step 1: Write the proportion equation
146,918.21 : 220,191.41 = 72,020.75 : x - Step 2: Convert to fraction form
146,918.21/220,191.41 = 72,020.75/x - Step 3: Cross multiply
146,918.21x = 220,191.41 × 72,020.75 - Step 4: Simplify right side
146,918.21x = 15,858,349,570.85 - Step 5: Solve for x
x = 15,858,349,570.85/146,918.21 - Step 6: Final answer
x = 107,939.99
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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.