Finding the Fourth Proportional to 136,516.80, 205,120.80 and 121,310.40
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Solution
The fourth proportional to 136,516.80, 205,120.80 and 121,310.40 is: 182,272.70
Step by Step Solution
- Step 1: Write the proportion equation
136,516.80 : 205,120.80 = 121,310.40 : x - Step 2: Convert to fraction form
136,516.80/205,120.80 = 121,310.40/x - Step 3: Cross multiply
136,516.80x = 205,120.80 × 121,310.40 - Step 4: Simplify right side
136,516.80x = 24,883,286,296.32 - Step 5: Solve for x
x = 24,883,286,296.32/136,516.80 - Step 6: Final answer
x = 182,272.70
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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.