Finding the Fourth Proportional to 112,963.20, 169,334.64 and 53,782.96
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Solution
The fourth proportional to 112,963.20, 169,334.64 and 53,782.96 is: 80,621.99
Step by Step Solution
- Step 1: Write the proportion equation
112,963.20 : 169,334.64 = 53,782.96 : x - Step 2: Convert to fraction form
112,963.20/169,334.64 = 53,782.96/x - Step 3: Cross multiply
112,963.20x = 169,334.64 × 53,782.96 - Step 4: Simplify right side
112,963.20x = 9,107,318,169.73 - Step 5: Solve for x
x = 9,107,318,169.73/112,963.20 - Step 6: Final answer
x = 80,621.99
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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.