Finding the Fourth Proportional to 120,430.59, 166,194.18 and 66,719.09
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Solution
The fourth proportional to 120,430.59, 166,194.18 and 66,719.09 is: 92,072.32
Step by Step Solution
- Step 1: Write the proportion equation
120,430.59 : 166,194.18 = 66,719.09 : x - Step 2: Convert to fraction form
120,430.59/166,194.18 = 66,719.09/x - Step 3: Cross multiply
120,430.59x = 166,194.18 × 66,719.09 - Step 4: Simplify right side
120,430.59x = 11,088,323,621.93 - Step 5: Solve for x
x = 11,088,323,621.93/120,430.59 - Step 6: Final answer
x = 92,072.32
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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.