Finding the Fourth Proportional to 125,659.89, 173,248.97 and 102,915.09
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Solution
The fourth proportional to 125,659.89, 173,248.97 and 102,915.09 is: 141,890.41
Step by Step Solution
- Step 1: Write the proportion equation
125,659.89 : 173,248.97 = 102,915.09 : x - Step 2: Convert to fraction form
125,659.89/173,248.97 = 102,915.09/x - Step 3: Cross multiply
125,659.89x = 173,248.97 × 102,915.09 - Step 4: Simplify right side
125,659.89x = 17,829,932,825.38 - Step 5: Solve for x
x = 17,829,932,825.38/125,659.89 - Step 6: Final answer
x = 141,890.41
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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.