Finding the Fourth Proportional to 108,153.81, 149,318.01 and 74,218.05
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Solution
The fourth proportional to 108,153.81, 149,318.01 and 74,218.05 is: 102,466.03
Step by Step Solution
- Step 1: Write the proportion equation
108,153.81 : 149,318.01 = 74,218.05 : x - Step 2: Convert to fraction form
108,153.81/149,318.01 = 74,218.05/x - Step 3: Cross multiply
108,153.81x = 149,318.01 × 74,218.05 - Step 4: Simplify right side
108,153.81x = 11,082,091,532.08 - Step 5: Solve for x
x = 11,082,091,532.08/108,153.81 - Step 6: Final answer
x = 102,466.03
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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.