Finding the Fourth Proportional to 100,609,011.70, 150,913,517.55 and 80,453,619.70
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Solution
The fourth proportional to 100,609,011.70, 150,913,517.55 and 80,453,619.70 is: 120,680,429.55
Step by Step Solution
- Step 1: Write the proportion equation
100,609,011.70 : 150,913,517.55 = 80,453,619.70 : x - Step 2: Convert to fraction form
100,609,011.70/150,913,517.55 = 80,453,619.70/x - Step 3: Cross multiply
100,609,011.70x = 150,913,517.55 × 80,453,619.70 - Step 4: Simplify right side
100,609,011.70x = 12,141,538,748,556,978 - Step 5: Solve for x
x = 12,141,538,748,556,978/100,609,011.70 - Step 6: Final answer
x = 120,680,429.55
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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.