Finding the Fourth Proportional to 135,172.10, 186,529.97 and 74,739.11
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Solution
The fourth proportional to 135,172.10, 186,529.97 and 74,739.11 is: 103,135.80
Step by Step Solution
- Step 1: Write the proportion equation
135,172.10 : 186,529.97 = 74,739.11 : x - Step 2: Convert to fraction form
135,172.10/186,529.97 = 74,739.11/x - Step 3: Cross multiply
135,172.10x = 186,529.97 × 74,739.11 - Step 4: Simplify right side
135,172.10x = 13,941,082,639.78 - Step 5: Solve for x
x = 13,941,082,639.78/135,172.10 - Step 6: Final answer
x = 103,135.80
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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.