Finding the Fourth Proportional to 190,638.90, 263,080.89 and 105,755.99
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Solution
The fourth proportional to 190,638.90, 263,080.89 and 105,755.99 is: 145,942.82
Step by Step Solution
- Step 1: Write the proportion equation
190,638.90 : 263,080.89 = 105,755.99 : x - Step 2: Convert to fraction form
190,638.90/263,080.89 = 105,755.99/x - Step 3: Cross multiply
190,638.90x = 263,080.89 × 105,755.99 - Step 4: Simplify right side
190,638.90x = 27,822,378,656.63 - Step 5: Solve for x
x = 27,822,378,656.63/190,638.90 - Step 6: Final answer
x = 145,942.82
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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.