Finding the Fourth Proportional to 99,824.80, 149,737.20 and 84,791.20
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Solution
The fourth proportional to 99,824.80, 149,737.20 and 84,791.20 is: 127,186.80
Step by Step Solution
- Step 1: Write the proportion equation
99,824.80 : 149,737.20 = 84,791.20 : x - Step 2: Convert to fraction form
99,824.80/149,737.20 = 84,791.20/x - Step 3: Cross multiply
99,824.80x = 149,737.20 × 84,791.20 - Step 4: Simplify right side
99,824.80x = 12,696,396,872.64 - Step 5: Solve for x
x = 12,696,396,872.64/99,824.80 - Step 6: Final answer
x = 127,186.80
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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.