Finding the Fourth Proportional to 135,051.68, 186,361.76 and 74,621.68
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Solution
The fourth proportional to 135,051.68, 186,361.76 and 74,621.68 is: 102,972.64
Step by Step Solution
- Step 1: Write the proportion equation
135,051.68 : 186,361.76 = 74,621.68 : x - Step 2: Convert to fraction form
135,051.68/186,361.76 = 74,621.68/x - Step 3: Cross multiply
135,051.68x = 186,361.76 × 74,621.68 - Step 4: Simplify right side
135,051.68x = 13,906,627,618.96 - Step 5: Solve for x
x = 13,906,627,618.96/135,051.68 - Step 6: Final answer
x = 102,972.64
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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.