Finding the Fourth Proportional to 205,147.42, 283,095.84 and 128,707.63
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Solution
The fourth proportional to 205,147.42, 283,095.84 and 128,707.63 is: 177,611.76
Step by Step Solution
- Step 1: Write the proportion equation
205,147.42 : 283,095.84 = 128,707.63 : x - Step 2: Convert to fraction form
205,147.42/283,095.84 = 128,707.63/x - Step 3: Cross multiply
205,147.42x = 283,095.84 × 128,707.63 - Step 4: Simplify right side
205,147.42x = 36,436,594,629.26 - Step 5: Solve for x
x = 36,436,594,629.26/205,147.42 - Step 6: Final answer
x = 177,611.76
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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.