Finding the Fourth Proportional to 135,414.21, 186,871.49 and 74,984.85
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Solution
The fourth proportional to 135,414.21, 186,871.49 and 74,984.85 is: 103,479.03
Step by Step Solution
- Step 1: Write the proportion equation
135,414.21 : 186,871.49 = 74,984.85 : x - Step 2: Convert to fraction form
135,414.21/186,871.49 = 74,984.85/x - Step 3: Cross multiply
135,414.21x = 186,871.49 × 74,984.85 - Step 4: Simplify right side
135,414.21x = 14,012,530,646.93 - Step 5: Solve for x
x = 14,012,530,646.93/135,414.21 - Step 6: Final answer
x = 103,479.03
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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.