Finding the Fourth Proportional to 170,618.70, 256,138.65 and 107,438.70
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Solution
The fourth proportional to 170,618.70, 256,138.65 and 107,438.70 is: 161,290.66
Step by Step Solution
- Step 1: Write the proportion equation
170,618.70 : 256,138.65 = 107,438.70 : x - Step 2: Convert to fraction form
170,618.70/256,138.65 = 107,438.70/x - Step 3: Cross multiply
170,618.70x = 256,138.65 × 107,438.70 - Step 4: Simplify right side
170,618.70x = 27,519,203,575.76 - Step 5: Solve for x
x = 27,519,203,575.76/170,618.70 - Step 6: Final answer
x = 161,290.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.