Finding the Fourth Proportional to 106,421.98, 159,736.85 and 87,890.80
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Solution
The fourth proportional to 106,421.98, 159,736.85 and 87,890.80 is: 131,921.99
Step by Step Solution
- Step 1: Write the proportion equation
106,421.98 : 159,736.85 = 87,890.80 : x - Step 2: Convert to fraction form
106,421.98/159,736.85 = 87,890.80/x - Step 3: Cross multiply
106,421.98x = 159,736.85 × 87,890.80 - Step 4: Simplify right side
106,421.98x = 14,039,399,535.98 - Step 5: Solve for x
x = 14,039,399,535.98/106,421.98 - Step 6: Final answer
x = 131,921.99
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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.