Finding the Fourth Proportional to 99,605.11, 149,161.63 and 74,243.81
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Solution
The fourth proportional to 99,605.11, 149,161.63 and 74,243.81 is: 111,182.32
Step by Step Solution
- Step 1: Write the proportion equation
99,605.11 : 149,161.63 = 74,243.81 : x - Step 2: Convert to fraction form
99,605.11/149,161.63 = 74,243.81/x - Step 3: Cross multiply
99,605.11x = 149,161.63 × 74,243.81 - Step 4: Simplify right side
99,605.11x = 11,074,327,717.01 - Step 5: Solve for x
x = 11,074,327,717.01/99,605.11 - Step 6: Final answer
x = 111,182.32
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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.