Finding the Fourth Proportional to 120,497.76, 180,858.76 and 61,377.68
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Solution
The fourth proportional to 120,497.76, 180,858.76 and 61,377.68 is: 92,123.63
Step by Step Solution
- Step 1: Write the proportion equation
120,497.76 : 180,858.76 = 61,377.68 : x - Step 2: Convert to fraction form
120,497.76/180,858.76 = 61,377.68/x - Step 3: Cross multiply
120,497.76x = 180,858.76 × 61,377.68 - Step 4: Simplify right side
120,497.76x = 11,100,691,395.18 - Step 5: Solve for x
x = 11,100,691,395.18/120,497.76 - Step 6: Final answer
x = 92,123.63
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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.