Finding the Fourth Proportional to 128,906.40, 193,368.81 and 53,951.07
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Solution
The fourth proportional to 128,906.40, 193,368.81 and 53,951.07 is: 80,930.46
Step by Step Solution
- Step 1: Write the proportion equation
128,906.40 : 193,368.81 = 53,951.07 : x - Step 2: Convert to fraction form
128,906.40/193,368.81 = 53,951.07/x - Step 3: Cross multiply
128,906.40x = 193,368.81 × 53,951.07 - Step 4: Simplify right side
128,906.40x = 10,432,454,204.13 - Step 5: Solve for x
x = 10,432,454,204.13/128,906.40 - Step 6: Final answer
x = 80,930.46
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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.