Finding the Fourth Proportional to 140,480.56, 193,964.70 and 86,839.12
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Solution
The fourth proportional to 140,480.56, 193,964.70 and 86,839.12 is: 119,900.75
Step by Step Solution
- Step 1: Write the proportion equation
140,480.56 : 193,964.70 = 86,839.12 : x - Step 2: Convert to fraction form
140,480.56/193,964.70 = 86,839.12/x - Step 3: Cross multiply
140,480.56x = 193,964.70 × 86,839.12 - Step 4: Simplify right side
140,480.56x = 16,843,723,859.06 - Step 5: Solve for x
x = 16,843,723,859.06/140,480.56 - Step 6: Final answer
x = 119,900.75
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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.