Finding the Fourth Proportional to 168,509,907.20, 252,764,860.80 and 149,378,031.20
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Solution
The fourth proportional to 168,509,907.20, 252,764,860.80 and 149,378,031.20 is: 224,067,046.80
Step by Step Solution
- Step 1: Write the proportion equation
168,509,907.20 : 252,764,860.80 = 149,378,031.20 : x - Step 2: Convert to fraction form
168,509,907.20/252,764,860.80 = 149,378,031.20/x - Step 3: Cross multiply
168,509,907.20x = 252,764,860.80 × 149,378,031.20 - Step 4: Simplify right side
168,509,907.20x = 37,757,517,262,846,056 - Step 5: Solve for x
x = 37,757,517,262,846,056/168,509,907.20 - Step 6: Final answer
x = 224,067,046.80
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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.