Finding the Fourth Proportional to 163,531.20, 245,296.80 and 121,540.80
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Solution
The fourth proportional to 163,531.20, 245,296.80 and 121,540.80 is: 182,311.20
Step by Step Solution
- Step 1: Write the proportion equation
163,531.20 : 245,296.80 = 121,540.80 : x - Step 2: Convert to fraction form
163,531.20/245,296.80 = 121,540.80/x - Step 3: Cross multiply
163,531.20x = 245,296.80 × 121,540.80 - Step 4: Simplify right side
163,531.20x = 29,813,569,309.44 - Step 5: Solve for x
x = 29,813,569,309.44/163,531.20 - Step 6: Final answer
x = 182,311.20
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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.