Finding the Fourth Proportional to 138,125.96, 190,544.82 and 87,201.80
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Solution
The fourth proportional to 138,125.96, 190,544.82 and 87,201.80 is: 120,294.92
Step by Step Solution
- Step 1: Write the proportion equation
138,125.96 : 190,544.82 = 87,201.80 : x - Step 2: Convert to fraction form
138,125.96/190,544.82 = 87,201.80/x - Step 3: Cross multiply
138,125.96x = 190,544.82 × 87,201.80 - Step 4: Simplify right side
138,125.96x = 16,615,851,284.68 - Step 5: Solve for x
x = 16,615,851,284.68/138,125.96 - Step 6: Final answer
x = 120,294.92
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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.