Finding the Fourth Proportional to 103,924.30, 155,497.20 and 74,007.70
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Solution
The fourth proportional to 103,924.30, 155,497.20 and 74,007.70 is: 110,734.35
Step by Step Solution
- Step 1: Write the proportion equation
103,924.30 : 155,497.20 = 74,007.70 : x - Step 2: Convert to fraction form
103,924.30/155,497.20 = 74,007.70/x - Step 3: Cross multiply
103,924.30x = 155,497.20 × 74,007.70 - Step 4: Simplify right side
103,924.30x = 11,507,990,128.44 - Step 5: Solve for x
x = 11,507,990,128.44/103,924.30 - Step 6: Final answer
x = 110,734.35
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1.5x scale
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.