Finding the Fourth Proportional to 128,495.08, 192,760.44 and 39,736.90
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Solution
The fourth proportional to 128,495.08, 192,760.44 and 39,736.90 is: 59,610.86
Step by Step Solution
- Step 1: Write the proportion equation
128,495.08 : 192,760.44 = 39,736.90 : x - Step 2: Convert to fraction form
128,495.08/192,760.44 = 39,736.90/x - Step 3: Cross multiply
128,495.08x = 192,760.44 × 39,736.90 - Step 4: Simplify right side
128,495.08x = 7,659,702,328.24 - Step 5: Solve for x
x = 7,659,702,328.24/128,495.08 - Step 6: Final answer
x = 59,610.86
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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.