Finding the Fourth Proportional to 128,138.68, 192,208.02 and 58,016.44
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Solution
The fourth proportional to 128,138.68, 192,208.02 and 58,016.44 is: 87,024.66
Step by Step Solution
- Step 1: Write the proportion equation
128,138.68 : 192,208.02 = 58,016.44 : x - Step 2: Convert to fraction form
128,138.68/192,208.02 = 58,016.44/x - Step 3: Cross multiply
128,138.68x = 192,208.02 × 58,016.44 - Step 4: Simplify right side
128,138.68x = 11,151,225,059.85 - Step 5: Solve for x
x = 11,151,225,059.85/128,138.68 - Step 6: Final answer
x = 87,024.66
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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.