Finding the Fourth Proportional to 212,157.28, 292,776.69 and 121,542.58
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Solution
The fourth proportional to 212,157.28, 292,776.69 and 121,542.58 is: 167,728.56
Step by Step Solution
- Step 1: Write the proportion equation
212,157.28 : 292,776.69 = 121,542.58 : x - Step 2: Convert to fraction form
212,157.28/292,776.69 = 121,542.58/x - Step 3: Cross multiply
212,157.28x = 292,776.69 × 121,542.58 - Step 4: Simplify right side
212,157.28x = 35,584,834,266.46 - Step 5: Solve for x
x = 35,584,834,266.46/212,157.28 - Step 6: Final answer
x = 167,728.56
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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.