Finding the Fourth Proportional to 170,816.70, 256,381.80 and 86,635.44
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Solution
The fourth proportional to 170,816.70, 256,381.80 and 86,635.44 is: 130,032.66
Step by Step Solution
- Step 1: Write the proportion equation
170,816.70 : 256,381.80 = 86,635.44 : x - Step 2: Convert to fraction form
170,816.70/256,381.80 = 86,635.44/x - Step 3: Cross multiply
170,816.70x = 256,381.80 × 86,635.44 - Step 4: Simplify right side
170,816.70x = 22,211,750,050.99 - Step 5: Solve for x
x = 22,211,750,050.99/170,816.70 - Step 6: Final answer
x = 130,032.66
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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.