Finding the Fourth Proportional to 139,993.54, 193,207.48 and 79,573.26
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Solution
The fourth proportional to 139,993.54, 193,207.48 and 79,573.26 is: 109,820.42
Step by Step Solution
- Step 1: Write the proportion equation
139,993.54 : 193,207.48 = 79,573.26 : x - Step 2: Convert to fraction form
139,993.54/193,207.48 = 79,573.26/x - Step 3: Cross multiply
139,993.54x = 193,207.48 × 79,573.26 - Step 4: Simplify right side
139,993.54x = 15,374,149,039.98 - Step 5: Solve for x
x = 15,374,149,039.98/139,993.54 - Step 6: Final answer
x = 109,820.42
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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.