Finding the Fourth Proportional to 146,221.09, 201,785.13 and 79,153.09
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Solution
The fourth proportional to 146,221.09, 201,785.13 and 79,153.09 is: 109,231.28
Step by Step Solution
- Step 1: Write the proportion equation
146,221.09 : 201,785.13 = 79,153.09 : x - Step 2: Convert to fraction form
146,221.09/201,785.13 = 79,153.09/x - Step 3: Cross multiply
146,221.09x = 201,785.13 × 79,153.09 - Step 4: Simplify right side
146,221.09x = 15,971,916,555.55 - Step 5: Solve for x
x = 15,971,916,555.55/146,221.09 - Step 6: Final answer
x = 109,231.28
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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.