Finding the Fourth Proportional to 106,581.80, 159,872.70 and 51,285.80
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Solution
The fourth proportional to 106,581.80, 159,872.70 and 51,285.80 is: 76,928.70
Step by Step Solution
- Step 1: Write the proportion equation
106,581.80 : 159,872.70 = 51,285.80 : x - Step 2: Convert to fraction form
106,581.80/159,872.70 = 51,285.80/x - Step 3: Cross multiply
106,581.80x = 159,872.70 × 51,285.80 - Step 4: Simplify right side
106,581.80x = 8,199,199,317.66 - Step 5: Solve for x
x = 8,199,199,317.66/106,581.80 - Step 6: Final answer
x = 76,928.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.