Finding the Fourth Proportional to 212,232.12, 292,921.86 and 121,648.74
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Solution
The fourth proportional to 212,232.12, 292,921.86 and 121,648.74 is: 167,899.07
Step by Step Solution
- Step 1: Write the proportion equation
212,232.12 : 292,921.86 = 121,648.74 : x - Step 2: Convert to fraction form
212,232.12/292,921.86 = 121,648.74/x - Step 3: Cross multiply
212,232.12x = 292,921.86 × 121,648.74 - Step 4: Simplify right side
212,232.12x = 35,633,575,187.46 - Step 5: Solve for x
x = 35,633,575,187.46/212,232.12 - Step 6: Final answer
x = 167,899.07
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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.