Finding the Fourth Proportional to 135,344.40, 202,440.60 and 121,405.20
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Solution
The fourth proportional to 135,344.40, 202,440.60 and 121,405.20 is: 181,591.12
Step by Step Solution
- Step 1: Write the proportion equation
135,344.40 : 202,440.60 = 121,405.20 : x - Step 2: Convert to fraction form
135,344.40/202,440.60 = 121,405.20/x - Step 3: Cross multiply
135,344.40x = 202,440.60 × 121,405.20 - Step 4: Simplify right side
135,344.40x = 24,577,341,531.12 - Step 5: Solve for x
x = 24,577,341,531.12/135,344.40 - Step 6: Final answer
x = 181,591.12
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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.