Finding the Fourth Proportional to 112,919.44, 169,410.12 and 91,806.96
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Solution
The fourth proportional to 112,919.44, 169,410.12 and 91,806.96 is: 137,735.61
Step by Step Solution
- Step 1: Write the proportion equation
112,919.44 : 169,410.12 = 91,806.96 : x - Step 2: Convert to fraction form
112,919.44/169,410.12 = 91,806.96/x - Step 3: Cross multiply
112,919.44x = 169,410.12 × 91,806.96 - Step 4: Simplify right side
112,919.44x = 15,553,028,110.44 - Step 5: Solve for x
x = 15,553,028,110.44/112,919.44 - Step 6: Final answer
x = 137,735.61
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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.