Finding the Fourth Proportional to 146,855.20, 202,657.68 and 79,786.72
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Solution
The fourth proportional to 146,855.20, 202,657.68 and 79,786.72 is: 110,104.32
Step by Step Solution
- Step 1: Write the proportion equation
146,855.20 : 202,657.68 = 79,786.72 : x - Step 2: Convert to fraction form
146,855.20/202,657.68 = 79,786.72/x - Step 3: Cross multiply
146,855.20x = 202,657.68 × 79,786.72 - Step 4: Simplify right side
146,855.20x = 16,169,391,570.01 - Step 5: Solve for x
x = 16,169,391,570.01/146,855.20 - Step 6: Final answer
x = 110,104.32
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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.