Finding the Fourth Proportional to 138,368,996.77, 207,697,106.79 and 80,190,344.41
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Solution
The fourth proportional to 138,368,996.77, 207,697,106.79 and 80,190,344.41 is: 120,368,745.28
Step by Step Solution
- Step 1: Write the proportion equation
138,368,996.77 : 207,697,106.79 = 80,190,344.41 : x - Step 2: Convert to fraction form
138,368,996.77/207,697,106.79 = 80,190,344.41/x - Step 3: Cross multiply
138,368,996.77x = 207,697,106.79 × 80,190,344.41 - Step 4: Simplify right side
138,368,996.77x = 16,655,302,526,450,648 - Step 5: Solve for x
x = 16,655,302,526,450,648/138,368,996.77 - Step 6: Final answer
x = 120,368,745.28
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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.