Finding the Fourth Proportional to 170,471,939.12, 235,315,249.12 and 111,738,386.96
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Solution
The fourth proportional to 170,471,939.12, 235,315,249.12 and 111,738,386.96 is: 154,240,906.15
Step by Step Solution
- Step 1: Write the proportion equation
170,471,939.12 : 235,315,249.12 = 111,738,386.96 : x - Step 2: Convert to fraction form
170,471,939.12/235,315,249.12 = 111,738,386.96/x - Step 3: Cross multiply
170,471,939.12x = 235,315,249.12 × 111,738,386.96 - Step 4: Simplify right side
170,471,939.12x = 26,293,746,363,759,360 - Step 5: Solve for x
x = 26,293,746,363,759,360/170,471,939.12 - Step 6: Final answer
x = 154,240,906.15
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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.