Finding the Fourth Proportional to 120,084.36, 180,129.62 and 56,889.68
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Solution
The fourth proportional to 120,084.36, 180,129.62 and 56,889.68 is: 85,335.98
Step by Step Solution
- Step 1: Write the proportion equation
120,084.36 : 180,129.62 = 56,889.68 : x - Step 2: Convert to fraction form
120,084.36/180,129.62 = 56,889.68/x - Step 3: Cross multiply
120,084.36x = 180,129.62 × 56,889.68 - Step 4: Simplify right side
120,084.36x = 10,247,515,681.90 - Step 5: Solve for x
x = 10,247,515,681.90/120,084.36 - Step 6: Final answer
x = 85,335.98
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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.