Finding the Fourth Proportional to 128,178.93, 192,212.92 and 53,247.75
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Solution
The fourth proportional to 128,178.93, 192,212.92 and 53,247.75 is: 79,848.59
Step by Step Solution
- Step 1: Write the proportion equation
128,178.93 : 192,212.92 = 53,247.75 : x - Step 2: Convert to fraction form
128,178.93/192,212.92 = 53,247.75/x - Step 3: Cross multiply
128,178.93x = 192,212.92 × 53,247.75 - Step 4: Simplify right side
128,178.93x = 10,234,906,628.25 - Step 5: Solve for x
x = 10,234,906,628.25/128,178.93 - Step 6: Final answer
x = 79,848.59
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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.