Finding the Fourth Proportional to 163,891.20, 245,577.60 and 121,900.80
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Solution
The fourth proportional to 163,891.20, 245,577.60 and 121,900.80 is: 182,658.41
Step by Step Solution
- Step 1: Write the proportion equation
163,891.20 : 245,577.60 = 121,900.80 : x - Step 2: Convert to fraction form
163,891.20/245,577.60 = 121,900.80/x - Step 3: Cross multiply
163,891.20x = 245,577.60 × 121,900.80 - Step 4: Simplify right side
163,891.20x = 29,936,105,902.08 - Step 5: Solve for x
x = 29,936,105,902.08/163,891.20 - Step 6: Final answer
x = 182,658.41
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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.