Finding the Fourth Proportional to 125,239.13, 172,830.60 and 74,938.13
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Solution
The fourth proportional to 125,239.13, 172,830.60 and 74,938.13 is: 103,414.98
Step by Step Solution
- Step 1: Write the proportion equation
125,239.13 : 172,830.60 = 74,938.13 : x - Step 2: Convert to fraction form
125,239.13/172,830.60 = 74,938.13/x - Step 3: Cross multiply
125,239.13x = 172,830.60 × 74,938.13 - Step 4: Simplify right side
125,239.13x = 12,951,601,970.78 - Step 5: Solve for x
x = 12,951,601,970.78/125,239.13 - Step 6: Final answer
x = 103,414.98
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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.