Finding the Fourth Proportional to 111,516.75, 153,896.36 and 61,218.99
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Solution
The fourth proportional to 111,516.75, 153,896.36 and 61,218.99 is: 84,483.98
Step by Step Solution
- Step 1: Write the proportion equation
111,516.75 : 153,896.36 = 61,218.99 : x - Step 2: Convert to fraction form
111,516.75/153,896.36 = 61,218.99/x - Step 3: Cross multiply
111,516.75x = 153,896.36 × 61,218.99 - Step 4: Simplify right side
111,516.75x = 9,421,379,417.78 - Step 5: Solve for x
x = 9,421,379,417.78/111,516.75 - Step 6: Final answer
x = 84,483.98
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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.