Finding the Fourth Proportional to 139,255.74, 192,177.18 and 81,884.70
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Solution
The fourth proportional to 139,255.74, 192,177.18 and 81,884.70 is: 113,003.39
Step by Step Solution
- Step 1: Write the proportion equation
139,255.74 : 192,177.18 = 81,884.70 : x - Step 2: Convert to fraction form
139,255.74/192,177.18 = 81,884.70/x - Step 3: Cross multiply
139,255.74x = 192,177.18 × 81,884.70 - Step 4: Simplify right side
139,255.74x = 15,736,370,731.15 - Step 5: Solve for x
x = 15,736,370,731.15/139,255.74 - Step 6: Final answer
x = 113,003.39
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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.