Finding the Fourth Proportional to 111,113.75, 153,282.30 and 75,314.99
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Solution
The fourth proportional to 111,113.75, 153,282.30 and 75,314.99 is: 103,897.63
Step by Step Solution
- Step 1: Write the proportion equation
111,113.75 : 153,282.30 = 75,314.99 : x - Step 2: Convert to fraction form
111,113.75/153,282.30 = 75,314.99/x - Step 3: Cross multiply
111,113.75x = 153,282.30 × 75,314.99 - Step 4: Simplify right side
111,113.75x = 11,544,454,891.68 - Step 5: Solve for x
x = 11,544,454,891.68/111,113.75 - Step 6: Final answer
x = 103,897.63
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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.