Finding the Fourth Proportional to 121,723.01, 167,965.46 and 83,515.44
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Solution
The fourth proportional to 121,723.01, 167,965.46 and 83,515.44 is: 115,242.87
Step by Step Solution
- Step 1: Write the proportion equation
121,723.01 : 167,965.46 = 83,515.44 : x - Step 2: Convert to fraction form
121,723.01/167,965.46 = 83,515.44/x - Step 3: Cross multiply
121,723.01x = 167,965.46 × 83,515.44 - Step 4: Simplify right side
121,723.01x = 14,027,708,879.13 - Step 5: Solve for x
x = 14,027,708,879.13/121,723.01 - Step 6: Final answer
x = 115,242.87
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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.