Finding the Fourth Proportional to 139,319.92, 192,292.08 and 91,577.68
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Solution
The fourth proportional to 139,319.92, 192,292.08 and 91,577.68 is: 126,397.31
Step by Step Solution
- Step 1: Write the proportion equation
139,319.92 : 192,292.08 = 91,577.68 : x - Step 2: Convert to fraction form
139,319.92/192,292.08 = 91,577.68/x - Step 3: Cross multiply
139,319.92x = 192,292.08 × 91,577.68 - Step 4: Simplify right side
139,319.92x = 17,609,662,568.77 - Step 5: Solve for x
x = 17,609,662,568.77/139,319.92 - Step 6: Final answer
x = 126,397.31
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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.