Finding the Fourth Proportional to 139,682.97, 192,803.19 and 91,291.95
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Solution
The fourth proportional to 139,682.97, 192,803.19 and 91,291.95 is: 126,009.49
Step by Step Solution
- Step 1: Write the proportion equation
139,682.97 : 192,803.19 = 91,291.95 : x - Step 2: Convert to fraction form
139,682.97/192,803.19 = 91,291.95/x - Step 3: Cross multiply
139,682.97x = 192,803.19 × 91,291.95 - Step 4: Simplify right side
139,682.97x = 17,601,379,181.32 - Step 5: Solve for x
x = 17,601,379,181.32/139,682.97 - Step 6: Final answer
x = 126,009.49
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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.