Finding the Fourth Proportional to 106,474.15, 159,378.99 and 78,425.83
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Solution
The fourth proportional to 106,474.15, 159,378.99 and 78,425.83 is: 117,394.03
Step by Step Solution
- Step 1: Write the proportion equation
106,474.15 : 159,378.99 = 78,425.83 : x - Step 2: Convert to fraction form
106,474.15/159,378.99 = 78,425.83/x - Step 3: Cross multiply
106,474.15x = 159,378.99 × 78,425.83 - Step 4: Simplify right side
106,474.15x = 12,499,429,575.31 - Step 5: Solve for x
x = 12,499,429,575.31/106,474.15 - Step 6: Final answer
x = 117,394.03
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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.