Finding the Fourth Proportional to 120,367.18, 166,106.69 and 66,652.20
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Solution
The fourth proportional to 120,367.18, 166,106.69 and 66,652.20 is: 91,980.03
Step by Step Solution
- Step 1: Write the proportion equation
120,367.18 : 166,106.69 = 66,652.20 : x - Step 2: Convert to fraction form
120,367.18/166,106.69 = 66,652.20/x - Step 3: Cross multiply
120,367.18x = 166,106.69 × 66,652.20 - Step 4: Simplify right side
120,367.18x = 11,071,376,323.22 - Step 5: Solve for x
x = 11,071,376,323.22/120,367.18 - Step 6: Final answer
x = 91,980.03
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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.