Finding the Fourth Proportional to 105,723.80, 158,585.70 and 53,235.80
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Solution
The fourth proportional to 105,723.80, 158,585.70 and 53,235.80 is: 79,853.70
Step by Step Solution
- Step 1: Write the proportion equation
105,723.80 : 158,585.70 = 53,235.80 : x - Step 2: Convert to fraction form
105,723.80/158,585.70 = 53,235.80/x - Step 3: Cross multiply
105,723.80x = 158,585.70 × 53,235.80 - Step 4: Simplify right side
105,723.80x = 8,442,436,608.06 - Step 5: Solve for x
x = 8,442,436,608.06/105,723.80 - Step 6: Final answer
x = 79,853.70
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1.5x scale
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.