Finding the Fourth Proportional to 135,175.21, 186,539.84 and 74,744.53
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Solution
The fourth proportional to 135,175.21, 186,539.84 and 74,744.53 is: 103,146.37
Step by Step Solution
- Step 1: Write the proportion equation
135,175.21 : 186,539.84 = 74,744.53 : x - Step 2: Convert to fraction form
135,175.21/186,539.84 = 74,744.53/x - Step 3: Cross multiply
135,175.21x = 186,539.84 × 74,744.53 - Step 4: Simplify right side
135,175.21x = 13,942,831,734.38 - Step 5: Solve for x
x = 13,942,831,734.38/135,175.21 - Step 6: Final answer
x = 103,146.37
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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.