Finding the Fourth Proportional to 138,169.80, 207,222.84 and 53,931.96
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Solution
The fourth proportional to 138,169.80, 207,222.84 and 53,931.96 is: 80,885.50
Step by Step Solution
- Step 1: Write the proportion equation
138,169.80 : 207,222.84 = 53,931.96 : x - Step 2: Convert to fraction form
138,169.80/207,222.84 = 53,931.96/x - Step 3: Cross multiply
138,169.80x = 207,222.84 × 53,931.96 - Step 4: Simplify right side
138,169.80x = 11,175,933,917.97 - Step 5: Solve for x
x = 11,175,933,917.97/138,169.80 - Step 6: Final answer
x = 80,885.50
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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.