Finding the Fourth Proportional to 121,485.51, 167,668.47 and 73,729.62
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Solution
The fourth proportional to 121,485.51, 167,668.47 and 73,729.62 is: 101,758.08
Step by Step Solution
- Step 1: Write the proportion equation
121,485.51 : 167,668.47 = 73,729.62 : x - Step 2: Convert to fraction form
121,485.51/167,668.47 = 73,729.62/x - Step 3: Cross multiply
121,485.51x = 167,668.47 × 73,729.62 - Step 4: Simplify right side
121,485.51x = 12,362,132,579.08 - Step 5: Solve for x
x = 12,362,132,579.08/121,485.51 - Step 6: Final answer
x = 101,758.08
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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.