Finding the Fourth Proportional to 139,610.58, 192,619.08 and 79,176.48
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Solution
The fourth proportional to 139,610.58, 192,619.08 and 79,176.48 is: 109,238.86
Step by Step Solution
- Step 1: Write the proportion equation
139,610.58 : 192,619.08 = 79,176.48 : x - Step 2: Convert to fraction form
139,610.58/192,619.08 = 79,176.48/x - Step 3: Cross multiply
139,610.58x = 192,619.08 × 79,176.48 - Step 4: Simplify right side
139,610.58x = 15,250,900,735.24 - Step 5: Solve for x
x = 15,250,900,735.24/139,610.58 - Step 6: Final answer
x = 109,238.86
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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.