Finding the Fourth Proportional to 140,135.09, 193,392.23 and 79,716.38
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Solution
The fourth proportional to 140,135.09, 193,392.23 and 79,716.38 is: 110,011.90
Step by Step Solution
- Step 1: Write the proportion equation
140,135.09 : 193,392.23 = 79,716.38 : x - Step 2: Convert to fraction form
140,135.09/193,392.23 = 79,716.38/x - Step 3: Cross multiply
140,135.09x = 193,392.23 × 79,716.38 - Step 4: Simplify right side
140,135.09x = 15,416,527,130.18 - Step 5: Solve for x
x = 15,416,527,130.18/140,135.09 - Step 6: Final answer
x = 110,011.90
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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.