Finding the Fourth Proportional to 140,791.99, 194,297.90 and 77,129.79
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Solution
The fourth proportional to 140,791.99, 194,297.90 and 77,129.79 is: 106,441.81
Step by Step Solution
- Step 1: Write the proportion equation
140,791.99 : 194,297.90 = 77,129.79 : x - Step 2: Convert to fraction form
140,791.99/194,297.90 = 77,129.79/x - Step 3: Cross multiply
140,791.99x = 194,297.90 × 77,129.79 - Step 4: Simplify right side
140,791.99x = 14,986,154,867.30 - Step 5: Solve for x
x = 14,986,154,867.30/140,791.99 - Step 6: Final answer
x = 106,441.81
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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.