Finding the Fourth Proportional to 108,181.63, 149,261.07 and 74,198.53
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Solution
The fourth proportional to 108,181.63, 149,261.07 and 74,198.53 is: 102,373.68
Step by Step Solution
- Step 1: Write the proportion equation
108,181.63 : 149,261.07 = 74,198.53 : x - Step 2: Convert to fraction form
108,181.63/149,261.07 = 74,198.53/x - Step 3: Cross multiply
108,181.63x = 149,261.07 × 74,198.53 - Step 4: Simplify right side
108,181.63x = 11,074,951,980.23 - Step 5: Solve for x
x = 11,074,951,980.23/108,181.63 - Step 6: Final answer
x = 102,373.68
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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.