Finding the Fourth Proportional to 139,741.88, 192,781.49 and 94,405.28
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Solution
The fourth proportional to 139,741.88, 192,781.49 and 94,405.28 is: 130,237.20
Step by Step Solution
- Step 1: Write the proportion equation
139,741.88 : 192,781.49 = 94,405.28 : x - Step 2: Convert to fraction form
139,741.88/192,781.49 = 94,405.28/x - Step 3: Cross multiply
139,741.88x = 192,781.49 × 94,405.28 - Step 4: Simplify right side
139,741.88x = 18,199,591,260.23 - Step 5: Solve for x
x = 18,199,591,260.23/139,741.88 - Step 6: Final answer
x = 130,237.20
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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.