Finding the Fourth Proportional to 99,378,234.80, 149,067,352.20 and 68,767,233.20
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Solution
The fourth proportional to 99,378,234.80, 149,067,352.20 and 68,767,233.20 is: 103,150,849.80
Step by Step Solution
- Step 1: Write the proportion equation
99,378,234.80 : 149,067,352.20 = 68,767,233.20 : x - Step 2: Convert to fraction form
99,378,234.80/149,067,352.20 = 68,767,233.20/x - Step 3: Cross multiply
99,378,234.80x = 149,067,352.20 × 68,767,233.20 - Step 4: Simplify right side
99,378,234.80x = 10,250,949,371,243,932 - Step 5: Solve for x
x = 10,250,949,371,243,932/99,378,234.80 - Step 6: Final answer
x = 103,150,849.80
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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.