Finding the Fourth Proportional to 12,127,645,163.70, 18,191,467,745.55 and 12,127,645,163.70
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Solution
The fourth proportional to 12,127,645,163.70, 18,191,467,745.55 and 12,127,645,163.70 is: 18,191,467,745.55
Step by Step Solution
- Step 1: Write the proportion equation
12,127,645,163.70 : 18,191,467,745.55 = 12,127,645,163.70 : x - Step 2: Convert to fraction form
12,127,645,163.70/18,191,467,745.55 = 12,127,645,163.70/x - Step 3: Cross multiply
12,127,645,163.70x = 18,191,467,745.55 × 12,127,645,163.70 - Step 4: Simplify right side
12,127,645,163.70x = 220,619,665,824,924,008,448 - Step 5: Solve for x
x = 220,619,665,824,924,008,448/12,127,645,163.70 - Step 6: Final answer
x = 18,191,467,745.55
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Double scale
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Similar ratio
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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.