Finding the Fourth Proportional to 120,555.68, 166,366.02 and 66,840.70
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Solution
The fourth proportional to 120,555.68, 166,366.02 and 66,840.70 is: 92,239.71
Step by Step Solution
- Step 1: Write the proportion equation
120,555.68 : 166,366.02 = 66,840.70 : x - Step 2: Convert to fraction form
120,555.68/166,366.02 = 66,840.70/x - Step 3: Cross multiply
120,555.68x = 166,366.02 × 66,840.70 - Step 4: Simplify right side
120,555.68x = 11,120,021,233.01 - Step 5: Solve for x
x = 11,120,021,233.01/120,555.68 - Step 6: Final answer
x = 92,239.71
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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.