Finding the Fourth Proportional to 138,398,101.20, 207,455,434.20 and 80,860,755.60
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Solution
The fourth proportional to 138,398,101.20, 207,455,434.20 and 80,860,755.60 is: 121,208,333.19
Step by Step Solution
- Step 1: Write the proportion equation
138,398,101.20 : 207,455,434.20 = 80,860,755.60 : x - Step 2: Convert to fraction form
138,398,101.20/207,455,434.20 = 80,860,755.60/x - Step 3: Cross multiply
138,398,101.20x = 207,455,434.20 × 80,860,755.60 - Step 4: Simplify right side
138,398,101.20x = 16,775,003,162,738,080 - Step 5: Solve for x
x = 16,775,003,162,738,080/138,398,101.20 - Step 6: Final answer
x = 121,208,333.19
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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.