Finding the Fourth Proportional to 128,719,163.70, 193,078,745.55 and 92,250,501.30
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Solution
The fourth proportional to 128,719,163.70, 193,078,745.55 and 92,250,501.30 is: 138,375,751.95
Step by Step Solution
- Step 1: Write the proportion equation
128,719,163.70 : 193,078,745.55 = 92,250,501.30 : x - Step 2: Convert to fraction form
128,719,163.70/193,078,745.55 = 92,250,501.30/x - Step 3: Cross multiply
128,719,163.70x = 193,078,745.55 × 92,250,501.30 - Step 4: Simplify right side
128,719,163.70x = 17,811,611,067,362,644 - Step 5: Solve for x
x = 17,811,611,067,362,644/128,719,163.70 - Step 6: Final answer
x = 138,375,751.95
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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.