Finding the Fourth Proportional to 212,835.21, 293,702.72 and 122,129.07
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Solution
The fourth proportional to 212,835.21, 293,702.72 and 122,129.07 is: 168,532.45
Step by Step Solution
- Step 1: Write the proportion equation
212,835.21 : 293,702.72 = 122,129.07 : x - Step 2: Convert to fraction form
212,835.21/293,702.72 = 122,129.07/x - Step 3: Cross multiply
212,835.21x = 293,702.72 × 122,129.07 - Step 4: Simplify right side
212,835.21x = 35,869,639,439.43 - Step 5: Solve for x
x = 35,869,639,439.43/212,835.21 - Step 6: Final answer
x = 168,532.45
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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.