Finding the Fourth Proportional to 135,452.21, 186,915.83 and 75,019.23
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Solution
The fourth proportional to 135,452.21, 186,915.83 and 75,019.23 is: 103,521.99
Step by Step Solution
- Step 1: Write the proportion equation
135,452.21 : 186,915.83 = 75,019.23 : x - Step 2: Convert to fraction form
135,452.21/186,915.83 = 75,019.23/x - Step 3: Cross multiply
135,452.21x = 186,915.83 × 75,019.23 - Step 4: Simplify right side
135,452.21x = 14,022,281,266.31 - Step 5: Solve for x
x = 14,022,281,266.31/135,452.21 - Step 6: Final answer
x = 103,521.99
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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.