Finding the Fourth Proportional to 139,548.74, 192,582.34 and 79,944.26
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Solution
The fourth proportional to 139,548.74, 192,582.34 and 79,944.26 is: 110,325.99
Step by Step Solution
- Step 1: Write the proportion equation
139,548.74 : 192,582.34 = 79,944.26 : x - Step 2: Convert to fraction form
139,548.74/192,582.34 = 79,944.26/x - Step 3: Cross multiply
139,548.74x = 192,582.34 × 79,944.26 - Step 4: Simplify right side
139,548.74x = 15,395,852,660.37 - Step 5: Solve for x
x = 15,395,852,660.37/139,548.74 - Step 6: Final answer
x = 110,325.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.