Finding the Fourth Proportional to 99,907.76, 149,732.46 and 74,750.43
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Solution
The fourth proportional to 99,907.76, 149,732.46 and 74,750.43 is: 112,028.99
Step by Step Solution
- Step 1: Write the proportion equation
99,907.76 : 149,732.46 = 74,750.43 : x - Step 2: Convert to fraction form
99,907.76/149,732.46 = 74,750.43/x - Step 3: Cross multiply
99,907.76x = 149,732.46 × 74,750.43 - Step 4: Simplify right side
99,907.76x = 11,192,565,021.30 - Step 5: Solve for x
x = 11,192,565,021.30/99,907.76 - Step 6: Final answer
x = 112,028.99
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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.