Finding the Fourth Proportional to 205,172.87, 283,143.35 and 128,695.21
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Solution
The fourth proportional to 205,172.87, 283,143.35 and 128,695.21 is: 177,602.39
Step by Step Solution
- Step 1: Write the proportion equation
205,172.87 : 283,143.35 = 128,695.21 : x - Step 2: Convert to fraction form
205,172.87/283,143.35 = 128,695.21/x - Step 3: Cross multiply
205,172.87x = 283,143.35 × 128,695.21 - Step 4: Simplify right side
205,172.87x = 36,439,192,502.23 - Step 5: Solve for x
x = 36,439,192,502.23/205,172.87 - Step 6: Final answer
x = 177,602.39
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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.