Finding the Fourth Proportional to 205,047.66, 283,143.77 and 128,699.08
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Solution
The fourth proportional to 205,047.66, 283,143.77 and 128,699.08 is: 177,716.45
Step by Step Solution
- Step 1: Write the proportion equation
205,047.66 : 283,143.77 = 128,699.08 : x - Step 2: Convert to fraction form
205,047.66/283,143.77 = 128,699.08/x - Step 3: Cross multiply
205,047.66x = 283,143.77 × 128,699.08 - Step 4: Simplify right side
205,047.66x = 36,440,342,706.73 - Step 5: Solve for x
x = 36,440,342,706.73/205,047.66 - Step 6: Final answer
x = 177,716.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.