Finding the Fourth Proportional to 139,364.01, 192,402.12 and 91,755.75
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Solution
The fourth proportional to 139,364.01, 192,402.12 and 91,755.75 is: 126,675.47
Step by Step Solution
- Step 1: Write the proportion equation
139,364.01 : 192,402.12 = 91,755.75 : x - Step 2: Convert to fraction form
139,364.01/192,402.12 = 91,755.75/x - Step 3: Cross multiply
139,364.01x = 192,402.12 × 91,755.75 - Step 4: Simplify right side
139,364.01x = 17,654,000,822.19 - Step 5: Solve for x
x = 17,654,000,822.19/139,364.01 - Step 6: Final answer
x = 126,675.47
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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.