Finding the Fourth Proportional to 128,433.40, 192,563.70 and 58,276.60
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Solution
The fourth proportional to 128,433.40, 192,563.70 and 58,276.60 is: 87,375.70
Step by Step Solution
- Step 1: Write the proportion equation
128,433.40 : 192,563.70 = 58,276.60 : x - Step 2: Convert to fraction form
128,433.40/192,563.70 = 58,276.60/x - Step 3: Cross multiply
128,433.40x = 192,563.70 × 58,276.60 - Step 4: Simplify right side
128,433.40x = 11,221,957,719.42 - Step 5: Solve for x
x = 11,221,957,719.42/128,433.40 - Step 6: Final answer
x = 87,375.70
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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.