Finding the Fourth Proportional to 126,409.12, 174,445.68 and 69,821.44
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Solution
The fourth proportional to 126,409.12, 174,445.68 and 69,821.44 is: 96,354.19
Step by Step Solution
- Step 1: Write the proportion equation
126,409.12 : 174,445.68 = 69,821.44 : x - Step 2: Convert to fraction form
126,409.12/174,445.68 = 69,821.44/x - Step 3: Cross multiply
126,409.12x = 174,445.68 × 69,821.44 - Step 4: Simplify right side
126,409.12x = 12,180,048,579.38 - Step 5: Solve for x
x = 12,180,048,579.38/126,409.12 - Step 6: Final answer
x = 96,354.19
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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.