Finding the Fourth Proportional to 112,772.05, 168,690.58 and 85,914.83
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Solution
The fourth proportional to 112,772.05, 168,690.58 and 85,914.83 is: 128,516.09
Step by Step Solution
- Step 1: Write the proportion equation
112,772.05 : 168,690.58 = 85,914.83 : x - Step 2: Convert to fraction form
112,772.05/168,690.58 = 85,914.83/x - Step 3: Cross multiply
112,772.05x = 168,690.58 × 85,914.83 - Step 4: Simplify right side
112,772.05x = 14,493,022,244.63 - Step 5: Solve for x
x = 14,493,022,244.63/112,772.05 - Step 6: Final answer
x = 128,516.09
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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.