Finding the Fourth Proportional to 178,218.91, 245,942.02 and 106,615.75
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Solution
The fourth proportional to 178,218.91, 245,942.02 and 106,615.75 is: 147,129.69
Step by Step Solution
- Step 1: Write the proportion equation
178,218.91 : 245,942.02 = 106,615.75 : x - Step 2: Convert to fraction form
178,218.91/245,942.02 = 106,615.75/x - Step 3: Cross multiply
178,218.91x = 245,942.02 × 106,615.75 - Step 4: Simplify right side
178,218.91x = 26,221,292,918.82 - Step 5: Solve for x
x = 26,221,292,918.82/178,218.91 - Step 6: Final answer
x = 147,129.69
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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.