Finding the Fourth Proportional to 138,398,103.70, 207,455,437.95 and 80,860,758.10
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Solution
The fourth proportional to 138,398,103.70, 207,455,437.95 and 80,860,758.10 is: 121,208,336.94
Step by Step Solution
- Step 1: Write the proportion equation
138,398,103.70 : 207,455,437.95 = 80,860,758.10 : x - Step 2: Convert to fraction form
138,398,103.70/207,455,437.95 = 80,860,758.10/x - Step 3: Cross multiply
138,398,103.70x = 207,455,437.95 × 80,860,758.10 - Step 4: Simplify right side
138,398,103.70x = 16,775,003,984,604,508 - Step 5: Solve for x
x = 16,775,003,984,604,508/138,398,103.70 - Step 6: Final answer
x = 121,208,336.94
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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.