Finding the Fourth Proportional to 103,555.49, 155,376.97 and 66,157.79
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Solution
The fourth proportional to 103,555.49, 155,376.97 and 66,157.79 is: 99,264.62
Step by Step Solution
- Step 1: Write the proportion equation
103,555.49 : 155,376.97 = 66,157.79 : x - Step 2: Convert to fraction form
103,555.49/155,376.97 = 66,157.79/x - Step 3: Cross multiply
103,555.49x = 155,376.97 × 66,157.79 - Step 4: Simplify right side
103,555.49x = 10,279,396,009.82 - Step 5: Solve for x
x = 10,279,396,009.82/103,555.49 - Step 6: Final answer
x = 99,264.62
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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.