Finding the Fourth Proportional to 207,009.42, 285,674.60 and 115,129.99
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Solution
The fourth proportional to 207,009.42, 285,674.60 and 115,129.99 is: 158,880.28
Step by Step Solution
- Step 1: Write the proportion equation
207,009.42 : 285,674.60 = 115,129.99 : x - Step 2: Convert to fraction form
207,009.42/285,674.60 = 115,129.99/x - Step 3: Cross multiply
207,009.42x = 285,674.60 × 115,129.99 - Step 4: Simplify right side
207,009.42x = 32,889,713,841.25 - Step 5: Solve for x
x = 32,889,713,841.25/207,009.42 - Step 6: Final answer
x = 158,880.28
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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.