Finding the Fourth Proportional to 190,621.69, 263,089.47 and 105,766.09
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Solution
The fourth proportional to 190,621.69, 263,089.47 and 105,766.09 is: 145,974.70
Step by Step Solution
- Step 1: Write the proportion equation
190,621.69 : 263,089.47 = 105,766.09 : x - Step 2: Convert to fraction form
190,621.69/263,089.47 = 105,766.09/x - Step 3: Cross multiply
190,621.69x = 263,089.47 × 105,766.09 - Step 4: Simplify right side
190,621.69x = 27,825,944,562.07 - Step 5: Solve for x
x = 27,825,944,562.07/190,621.69 - Step 6: Final answer
x = 145,974.70
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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.