Finding the Fourth Proportional to 121,011.42, 166,971.84 and 73,269.18
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Solution
The fourth proportional to 121,011.42, 166,971.84 and 73,269.18 is: 101,096.99
Step by Step Solution
- Step 1: Write the proportion equation
121,011.42 : 166,971.84 = 73,269.18 : x - Step 2: Convert to fraction form
121,011.42/166,971.84 = 73,269.18/x - Step 3: Cross multiply
121,011.42x = 166,971.84 × 73,269.18 - Step 4: Simplify right side
121,011.42x = 12,233,889,799.89 - Step 5: Solve for x
x = 12,233,889,799.89/121,011.42 - Step 6: Final answer
x = 101,096.99
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1.5x scale
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.