Finding the Fourth Proportional to 125,340.96, 172,992.60 and 74,381.80
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Solution
The fourth proportional to 125,340.96, 172,992.60 and 74,381.80 is: 102,659.98
Step by Step Solution
- Step 1: Write the proportion equation
125,340.96 : 172,992.60 = 74,381.80 : x - Step 2: Convert to fraction form
125,340.96/172,992.60 = 74,381.80/x - Step 3: Cross multiply
125,340.96x = 172,992.60 × 74,381.80 - Step 4: Simplify right side
125,340.96x = 12,867,500,974.68 - Step 5: Solve for x
x = 12,867,500,974.68/125,340.96 - Step 6: Final answer
x = 102,659.98
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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.