Finding the Fourth Proportional to 139,394.28, 192,394.67 and 91,652.07
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Solution
The fourth proportional to 139,394.28, 192,394.67 and 91,652.07 is: 126,499.95
Step by Step Solution
- Step 1: Write the proportion equation
139,394.28 : 192,394.67 = 91,652.07 : x - Step 2: Convert to fraction form
139,394.28/192,394.67 = 91,652.07/x - Step 3: Cross multiply
139,394.28x = 192,394.67 × 91,652.07 - Step 4: Simplify right side
139,394.28x = 17,633,369,304.21 - Step 5: Solve for x
x = 17,633,369,304.21/139,394.28 - Step 6: Final answer
x = 126,499.95
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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.