Finding the Fourth Proportional to 138,398,102.20, 207,455,435.70 and 80,860,756.60
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Solution
The fourth proportional to 138,398,102.20, 207,455,435.70 and 80,860,756.60 is: 121,208,334.69
Step by Step Solution
- Step 1: Write the proportion equation
138,398,102.20 : 207,455,435.70 = 80,860,756.60 : x - Step 2: Convert to fraction form
138,398,102.20/207,455,435.70 = 80,860,756.60/x - Step 3: Cross multiply
138,398,102.20x = 207,455,435.70 × 80,860,756.60 - Step 4: Simplify right side
138,398,102.20x = 16,775,003,491,484,648 - Step 5: Solve for x
x = 16,775,003,491,484,648/138,398,102.20 - Step 6: Final answer
x = 121,208,334.69
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.