Finding the Fourth Proportional to 212,222.06, 292,908.05 and 121,638.75
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Solution
The fourth proportional to 212,222.06, 292,908.05 and 121,638.75 is: 167,885.32
Step by Step Solution
- Step 1: Write the proportion equation
212,222.06 : 292,908.05 = 121,638.75 : x - Step 2: Convert to fraction form
212,222.06/292,908.05 = 121,638.75/x - Step 3: Cross multiply
212,222.06x = 292,908.05 × 121,638.75 - Step 4: Simplify right side
212,222.06x = 35,628,969,066.94 - Step 5: Solve for x
x = 35,628,969,066.94/212,222.06 - Step 6: Final answer
x = 167,885.32
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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.