Finding the Fourth Proportional to 135,691.20, 203,536.80 and 100,699.20
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Solution
The fourth proportional to 135,691.20, 203,536.80 and 100,699.20 is: 151,048.80
Step by Step Solution
- Step 1: Write the proportion equation
135,691.20 : 203,536.80 = 100,699.20 : x - Step 2: Convert to fraction form
135,691.20/203,536.80 = 100,699.20/x - Step 3: Cross multiply
135,691.20x = 203,536.80 × 100,699.20 - Step 4: Simplify right side
135,691.20x = 20,495,992,930.56 - Step 5: Solve for x
x = 20,495,992,930.56/135,691.20 - Step 6: Final answer
x = 151,048.80
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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.