Finding the Fourth Proportional to 212,225.56, 292,912.88 and 121,642.26
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Solution
The fourth proportional to 212,225.56, 292,912.88 and 121,642.26 is: 167,890.17
Step by Step Solution
- Step 1: Write the proportion equation
212,225.56 : 292,912.88 = 121,642.26 : x - Step 2: Convert to fraction form
212,225.56/292,912.88 = 121,642.26/x - Step 3: Cross multiply
212,225.56x = 292,912.88 × 121,642.26 - Step 4: Simplify right side
212,225.56x = 35,630,584,706.31 - Step 5: Solve for x
x = 35,630,584,706.31/212,225.56 - Step 6: Final answer
x = 167,890.17
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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.