Finding the Fourth Proportional to 126,029,236.70, 189,043,855.05 and 100,520,068.70
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Solution
The fourth proportional to 126,029,236.70, 189,043,855.05 and 100,520,068.70 is: 150,780,103.05
Step by Step Solution
- Step 1: Write the proportion equation
126,029,236.70 : 189,043,855.05 = 100,520,068.70 : x - Step 2: Convert to fraction form
126,029,236.70/189,043,855.05 = 100,520,068.70/x - Step 3: Cross multiply
126,029,236.70x = 189,043,855.05 × 100,520,068.70 - Step 4: Simplify right side
126,029,236.70x = 19,002,701,296,938,844 - Step 5: Solve for x
x = 19,002,701,296,938,844/126,029,236.70 - Step 6: Final answer
x = 150,780,103.05
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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.