Finding the Fourth Proportional to 128,796.73, 192,944.93 and 72,465.08
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Solution
The fourth proportional to 128,796.73, 192,944.93 and 72,465.08 is: 108,556.86
Step by Step Solution
- Step 1: Write the proportion equation
128,796.73 : 192,944.93 = 72,465.08 : x - Step 2: Convert to fraction form
128,796.73/192,944.93 = 72,465.08/x - Step 3: Cross multiply
128,796.73x = 192,944.93 × 72,465.08 - Step 4: Simplify right side
128,796.73x = 13,981,768,460.99 - Step 5: Solve for x
x = 13,981,768,460.99/128,796.73 - Step 6: Final answer
x = 108,556.86
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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.