Finding the Fourth Proportional to 99,419.06, 149,128.58 and 36,243.92
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Solution
The fourth proportional to 99,419.06, 149,128.58 and 36,243.92 is: 54,365.88
Step by Step Solution
- Step 1: Write the proportion equation
99,419.06 : 149,128.58 = 36,243.92 : x - Step 2: Convert to fraction form
99,419.06/149,128.58 = 36,243.92/x - Step 3: Cross multiply
99,419.06x = 149,128.58 × 36,243.92 - Step 4: Simplify right side
99,419.06x = 5,405,004,323.23 - Step 5: Solve for x
x = 5,405,004,323.23/99,419.06 - Step 6: Final answer
x = 54,365.88
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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.