Finding the Fourth Proportional to 135,803.70, 203,705.55 and 100,811.70
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Solution
The fourth proportional to 135,803.70, 203,705.55 and 100,811.70 is: 151,217.55
Step by Step Solution
- Step 1: Write the proportion equation
135,803.70 : 203,705.55 = 100,811.70 : x - Step 2: Convert to fraction form
135,803.70/203,705.55 = 100,811.70/x - Step 3: Cross multiply
135,803.70x = 203,705.55 × 100,811.70 - Step 4: Simplify right side
135,803.70x = 20,535,902,794.94 - Step 5: Solve for x
x = 20,535,902,794.94/135,803.70 - Step 6: Final answer
x = 151,217.55
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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.