Finding the Fourth Proportional to 128,573.55, 192,891.12 and 53,652.02
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Solution
The fourth proportional to 128,573.55, 192,891.12 and 53,652.02 is: 80,490.88
Step by Step Solution
- Step 1: Write the proportion equation
128,573.55 : 192,891.12 = 53,652.02 : x - Step 2: Convert to fraction form
128,573.55/192,891.12 = 53,652.02/x - Step 3: Cross multiply
128,573.55x = 192,891.12 × 53,652.02 - Step 4: Simplify right side
128,573.55x = 10,348,998,449.22 - Step 5: Solve for x
x = 10,348,998,449.22/128,573.55 - Step 6: Final answer
x = 80,490.88
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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.