Finding the Fourth Proportional to 212,322.23, 292,971.21 and 121,660.76
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Solution
The fourth proportional to 212,322.23, 292,971.21 and 121,660.76 is: 167,872.67
Step by Step Solution
- Step 1: Write the proportion equation
212,322.23 : 292,971.21 = 121,660.76 : x - Step 2: Convert to fraction form
212,322.23/292,971.21 = 121,660.76/x - Step 3: Cross multiply
212,322.23x = 292,971.21 × 121,660.76 - Step 4: Simplify right side
212,322.23x = 35,643,098,601.86 - Step 5: Solve for x
x = 35,643,098,601.86/212,322.23 - Step 6: Final answer
x = 167,872.67
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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.