Finding the Fourth Proportional to 137,205.42, 189,360.36 and 83,495.94
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Solution
The fourth proportional to 137,205.42, 189,360.36 and 83,495.94 is: 115,234.67
Step by Step Solution
- Step 1: Write the proportion equation
137,205.42 : 189,360.36 = 83,495.94 : x - Step 2: Convert to fraction form
137,205.42/189,360.36 = 83,495.94/x - Step 3: Cross multiply
137,205.42x = 189,360.36 × 83,495.94 - Step 4: Simplify right side
137,205.42x = 15,810,821,256.94 - Step 5: Solve for x
x = 15,810,821,256.94/137,205.42 - Step 6: Final answer
x = 115,234.67
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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.