Finding the Fourth Proportional to 197,139.09, 271,957.10 and 129,126.63
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Solution
The fourth proportional to 197,139.09, 271,957.10 and 129,126.63 is: 178,132.63
Step by Step Solution
- Step 1: Write the proportion equation
197,139.09 : 271,957.10 = 129,126.63 : x - Step 2: Convert to fraction form
197,139.09/271,957.10 = 129,126.63/x - Step 3: Cross multiply
197,139.09x = 271,957.10 × 129,126.63 - Step 4: Simplify right side
197,139.09x = 35,116,902,790.60 - Step 5: Solve for x
x = 35,116,902,790.60/197,139.09 - Step 6: Final answer
x = 178,132.63
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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.