Finding the Fourth Proportional to 121,883.22, 168,128.34 and 73,452.08
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Solution
The fourth proportional to 121,883.22, 168,128.34 and 73,452.08 is: 101,321.38
Step by Step Solution
- Step 1: Write the proportion equation
121,883.22 : 168,128.34 = 73,452.08 : x - Step 2: Convert to fraction form
121,883.22/168,128.34 = 73,452.08/x - Step 3: Cross multiply
121,883.22x = 168,128.34 × 73,452.08 - Step 4: Simplify right side
121,883.22x = 12,349,376,279.95 - Step 5: Solve for x
x = 12,349,376,279.95/121,883.22 - Step 6: Final answer
x = 101,321.38
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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.