Finding the Fourth Proportional to 155,408.81, 214,463.84 and 87,425.82
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Solution
The fourth proportional to 155,408.81, 214,463.84 and 87,425.82 is: 120,647.45
Step by Step Solution
- Step 1: Write the proportion equation
155,408.81 : 214,463.84 = 87,425.82 : x - Step 2: Convert to fraction form
155,408.81/214,463.84 = 87,425.82/x - Step 3: Cross multiply
155,408.81x = 214,463.84 × 87,425.82 - Step 4: Simplify right side
155,408.81x = 18,749,676,635.22 - Step 5: Solve for x
x = 18,749,676,635.22/155,408.81 - Step 6: Final answer
x = 120,647.45
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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.