Finding the Fourth Proportional to 140,561.08, 193,987.64 and 76,908.44
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Solution
The fourth proportional to 140,561.08, 193,987.64 and 76,908.44 is: 106,140.95
Step by Step Solution
- Step 1: Write the proportion equation
140,561.08 : 193,987.64 = 76,908.44 : x - Step 2: Convert to fraction form
140,561.08/193,987.64 = 76,908.44/x - Step 3: Cross multiply
140,561.08x = 193,987.64 × 76,908.44 - Step 4: Simplify right side
140,561.08x = 14,919,286,771.68 - Step 5: Solve for x
x = 14,919,286,771.68/140,561.08 - Step 6: Final answer
x = 106,140.95
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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.