Finding the Fourth Proportional to 126,686.44, 190,084.79 and 79,409.88
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Solution
The fourth proportional to 126,686.44, 190,084.79 and 79,409.88 is: 119,149.38
Step by Step Solution
- Step 1: Write the proportion equation
126,686.44 : 190,084.79 = 79,409.88 : x - Step 2: Convert to fraction form
126,686.44/190,084.79 = 79,409.88/x - Step 3: Cross multiply
126,686.44x = 190,084.79 × 79,409.88 - Step 4: Simplify right side
126,686.44x = 15,094,610,562.25 - Step 5: Solve for x
x = 15,094,610,562.25/126,686.44 - Step 6: Final answer
x = 119,149.38
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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.