Finding the Fourth Proportional to 202,181.09, 279,009.12 and 111,542.70
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Solution
The fourth proportional to 202,181.09, 279,009.12 and 111,542.70 is: 153,928.49
Step by Step Solution
- Step 1: Write the proportion equation
202,181.09 : 279,009.12 = 111,542.70 : x - Step 2: Convert to fraction form
202,181.09/279,009.12 = 111,542.70/x - Step 3: Cross multiply
202,181.09x = 279,009.12 × 111,542.70 - Step 4: Simplify right side
202,181.09x = 31,121,430,569.42 - Step 5: Solve for x
x = 31,121,430,569.42/202,181.09 - Step 6: Final answer
x = 153,928.49
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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.