Finding the Fourth Proportional to 138,612.68, 208,269.36 and 133,007.68
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Solution
The fourth proportional to 138,612.68, 208,269.36 and 133,007.68 is: 199,847.69
Step by Step Solution
- Step 1: Write the proportion equation
138,612.68 : 208,269.36 = 133,007.68 : x - Step 2: Convert to fraction form
138,612.68/208,269.36 = 133,007.68/x - Step 3: Cross multiply
138,612.68x = 208,269.36 × 133,007.68 - Step 4: Simplify right side
138,612.68x = 27,701,424,388.68 - Step 5: Solve for x
x = 27,701,424,388.68/138,612.68 - Step 6: Final answer
x = 199,847.69
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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.