Finding the Fourth Proportional to 140,067.75, 193,293.25 and 76,405.55
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Solution
The fourth proportional to 140,067.75, 193,293.25 and 76,405.55 is: 105,439.52
Step by Step Solution
- Step 1: Write the proportion equation
140,067.75 : 193,293.25 = 76,405.55 : x - Step 2: Convert to fraction form
140,067.75/193,293.25 = 76,405.55/x - Step 3: Cross multiply
140,067.75x = 193,293.25 × 76,405.55 - Step 4: Simplify right side
140,067.75x = 14,768,676,349.84 - Step 5: Solve for x
x = 14,768,676,349.84/140,067.75 - Step 6: Final answer
x = 105,439.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.