Finding the Fourth Proportional to 190,129.86, 262,141.02 and 122,026.68
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Solution
The fourth proportional to 190,129.86, 262,141.02 and 122,026.68 is: 168,243.95
Step by Step Solution
- Step 1: Write the proportion equation
190,129.86 : 262,141.02 = 122,026.68 : x - Step 2: Convert to fraction form
190,129.86/262,141.02 = 122,026.68/x - Step 3: Cross multiply
190,129.86x = 262,141.02 × 122,026.68 - Step 4: Simplify right side
190,129.86x = 31,988,198,362.41 - Step 5: Solve for x
x = 31,988,198,362.41/190,129.86 - Step 6: Final answer
x = 168,243.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.