Finding the Fourth Proportional to 100,359.70, 150,539.55 and 74,115.70
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Solution
The fourth proportional to 100,359.70, 150,539.55 and 74,115.70 is: 111,173.55
Step by Step Solution
- Step 1: Write the proportion equation
100,359.70 : 150,539.55 = 74,115.70 : x - Step 2: Convert to fraction form
100,359.70/150,539.55 = 74,115.70/x - Step 3: Cross multiply
100,359.70x = 150,539.55 × 74,115.70 - Step 4: Simplify right side
100,359.70x = 11,157,344,125.94 - Step 5: Solve for x
x = 11,157,344,125.94/100,359.70 - Step 6: Final answer
x = 111,173.55
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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.