Finding the Fourth Proportional to 111,495.75, 153,864.14 and 61,197.99
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Solution
The fourth proportional to 111,495.75, 153,864.14 and 61,197.99 is: 84,453.23
Step by Step Solution
- Step 1: Write the proportion equation
111,495.75 : 153,864.14 = 61,197.99 : x - Step 2: Convert to fraction form
111,495.75/153,864.14 = 61,197.99/x - Step 3: Cross multiply
111,495.75x = 153,864.14 × 61,197.99 - Step 4: Simplify right side
111,495.75x = 9,416,175,795.09 - Step 5: Solve for x
x = 9,416,175,795.09/111,495.75 - Step 6: Final answer
x = 84,453.23
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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.