Finding the Fourth Proportional to 128,996.60, 193,569.64 and 54,110.08
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Solution
The fourth proportional to 128,996.60, 193,569.64 and 54,110.08 is: 81,196.47
Step by Step Solution
- Step 1: Write the proportion equation
128,996.60 : 193,569.64 = 54,110.08 : x - Step 2: Convert to fraction form
128,996.60/193,569.64 = 54,110.08/x - Step 3: Cross multiply
128,996.60x = 193,569.64 × 54,110.08 - Step 4: Simplify right side
128,996.60x = 10,474,068,705.97 - Step 5: Solve for x
x = 10,474,068,705.97/128,996.60 - Step 6: Final answer
x = 81,196.47
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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.