Finding the Fourth Proportional to 129,835.75, 194,753.62 and 31,339.75
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Solution
The fourth proportional to 129,835.75, 194,753.62 and 31,339.75 is: 47,009.62
Step by Step Solution
- Step 1: Write the proportion equation
129,835.75 : 194,753.62 = 31,339.75 : x - Step 2: Convert to fraction form
129,835.75/194,753.62 = 31,339.75/x - Step 3: Cross multiply
129,835.75x = 194,753.62 × 31,339.75 - Step 4: Simplify right side
129,835.75x = 6,103,529,762.40 - Step 5: Solve for x
x = 6,103,529,762.40/129,835.75 - Step 6: Final answer
x = 47,009.62
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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.