Finding the Fourth Proportional to 120,486.76, 166,267.79 and 72,731.79
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Solution
The fourth proportional to 120,486.76, 166,267.79 and 72,731.79 is: 100,367.49
Step by Step Solution
- Step 1: Write the proportion equation
120,486.76 : 166,267.79 = 72,731.79 : x - Step 2: Convert to fraction form
120,486.76/166,267.79 = 72,731.79/x - Step 3: Cross multiply
120,486.76x = 166,267.79 × 72,731.79 - Step 4: Simplify right side
120,486.76x = 12,092,953,895.13 - Step 5: Solve for x
x = 12,092,953,895.13/120,486.76 - Step 6: Final answer
x = 100,367.49
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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.