Finding the Fourth Proportional to 212,281.56, 292,915.17 and 121,620.06
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Solution
The fourth proportional to 212,281.56, 292,915.17 and 121,620.06 is: 167,816.56
Step by Step Solution
- Step 1: Write the proportion equation
212,281.56 : 292,915.17 = 121,620.06 : x - Step 2: Convert to fraction form
212,281.56/292,915.17 = 121,620.06/x - Step 3: Cross multiply
212,281.56x = 292,915.17 × 121,620.06 - Step 4: Simplify right side
212,281.56x = 35,624,360,550.31 - Step 5: Solve for x
x = 35,624,360,550.31/212,281.56 - Step 6: Final answer
x = 167,816.56
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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.