Finding the Fourth Proportional to 125,918.35, 173,998.94 and 91,869.19
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Solution
The fourth proportional to 125,918.35, 173,998.94 and 91,869.19 is: 126,948.46
Step by Step Solution
- Step 1: Write the proportion equation
125,918.35 : 173,998.94 = 91,869.19 : x - Step 2: Convert to fraction form
125,918.35/173,998.94 = 91,869.19/x - Step 3: Cross multiply
125,918.35x = 173,998.94 × 91,869.19 - Step 4: Simplify right side
125,918.35x = 15,985,140,784.32 - Step 5: Solve for x
x = 15,985,140,784.32/125,918.35 - Step 6: Final answer
x = 126,948.46
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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.