Finding the Fourth Proportional to 203,494.70, 305,242.05 and 85,153.70
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Solution
The fourth proportional to 203,494.70, 305,242.05 and 85,153.70 is: 127,730.55
Step by Step Solution
- Step 1: Write the proportion equation
203,494.70 : 305,242.05 = 85,153.70 : x - Step 2: Convert to fraction form
203,494.70/305,242.05 = 85,153.70/x - Step 3: Cross multiply
203,494.70x = 305,242.05 × 85,153.70 - Step 4: Simplify right side
203,494.70x = 25,992,489,953.09 - Step 5: Solve for x
x = 25,992,489,953.09/203,494.70 - Step 6: Final answer
x = 127,730.55
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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.