Finding the Fourth Proportional to 129,423.65, 194,135.34 and 40,684.91
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Solution
The fourth proportional to 129,423.65, 194,135.34 and 40,684.91 is: 61,027.32
Step by Step Solution
- Step 1: Write the proportion equation
129,423.65 : 194,135.34 = 40,684.91 : x - Step 2: Convert to fraction form
129,423.65/194,135.34 = 40,684.91/x - Step 3: Cross multiply
129,423.65x = 194,135.34 × 40,684.91 - Step 4: Simplify right side
129,423.65x = 7,898,378,835.72 - Step 5: Solve for x
x = 7,898,378,835.72/129,423.65 - Step 6: Final answer
x = 61,027.32
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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.