Finding the Fourth Proportional to 139,968,108.90, 209,952,163.35 and 129,764,441.70
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Solution
The fourth proportional to 139,968,108.90, 209,952,163.35 and 129,764,441.70 is: 194,646,662.55
Step by Step Solution
- Step 1: Write the proportion equation
139,968,108.90 : 209,952,163.35 = 129,764,441.70 : x - Step 2: Convert to fraction form
139,968,108.90/209,952,163.35 = 129,764,441.70/x - Step 3: Cross multiply
139,968,108.90x = 209,952,163.35 × 129,764,441.70 - Step 4: Simplify right side
139,968,108.90x = 27,244,325,260,819,952 - Step 5: Solve for x
x = 27,244,325,260,819,952/139,968,108.90 - Step 6: Final answer
x = 194,646,662.55
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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.