Finding the Fourth Proportional to 135,380.30, 186,819.62 and 74,949.84
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Solution
The fourth proportional to 135,380.30, 186,819.62 and 74,949.84 is: 103,427.90
Step by Step Solution
- Step 1: Write the proportion equation
135,380.30 : 186,819.62 = 74,949.84 : x - Step 2: Convert to fraction form
135,380.30/186,819.62 = 74,949.84/x - Step 3: Cross multiply
135,380.30x = 186,819.62 × 74,949.84 - Step 4: Simplify right side
135,380.30x = 14,002,100,253.11 - Step 5: Solve for x
x = 14,002,100,253.11/135,380.30 - Step 6: Final answer
x = 103,427.90
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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.