Finding the Fourth Proportional to 121,899.24, 168,324.78 and 76,652.94
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Solution
The fourth proportional to 121,899.24, 168,324.78 and 76,652.94 is: 105,846.35
Step by Step Solution
- Step 1: Write the proportion equation
121,899.24 : 168,324.78 = 76,652.94 : x - Step 2: Convert to fraction form
121,899.24/168,324.78 = 76,652.94/x - Step 3: Cross multiply
121,899.24x = 168,324.78 × 76,652.94 - Step 4: Simplify right side
121,899.24x = 12,902,589,261.85 - Step 5: Solve for x
x = 12,902,589,261.85/121,899.24 - Step 6: Final answer
x = 105,846.35
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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.