Finding the Fourth Proportional to 128,034.20, 192,051.30 and 88,635.80
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Solution
The fourth proportional to 128,034.20, 192,051.30 and 88,635.80 is: 132,953.70
Step by Step Solution
- Step 1: Write the proportion equation
128,034.20 : 192,051.30 = 88,635.80 : x - Step 2: Convert to fraction form
128,034.20/192,051.30 = 88,635.80/x - Step 3: Cross multiply
128,034.20x = 192,051.30 × 88,635.80 - Step 4: Simplify right side
128,034.20x = 17,022,620,616.54 - Step 5: Solve for x
x = 17,022,620,616.54/128,034.20 - Step 6: Final answer
x = 132,953.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.