Finding the Fourth Proportional to 423,672.13, 635,507.60 and 108,129.02
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Solution
The fourth proportional to 423,672.13, 635,507.60 and 108,129.02 is: 162,193.38
Step by Step Solution
- Step 1: Write the proportion equation
423,672.13 : 635,507.60 = 108,129.02 : x - Step 2: Convert to fraction form
423,672.13/635,507.60 = 108,129.02/x - Step 3: Cross multiply
423,672.13x = 635,507.60 × 108,129.02 - Step 4: Simplify right side
423,672.13x = 68,716,813,990.55 - Step 5: Solve for x
x = 68,716,813,990.55/423,672.13 - Step 6: Final answer
x = 162,193.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.