Finding the Fourth Proportional to 125,699.05, 173,415.30 and 71,955.13
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Solution
The fourth proportional to 125,699.05, 173,415.30 and 71,955.13 is: 99,269.81
Step by Step Solution
- Step 1: Write the proportion equation
125,699.05 : 173,415.30 = 71,955.13 : x - Step 2: Convert to fraction form
125,699.05/173,415.30 = 71,955.13/x - Step 3: Cross multiply
125,699.05x = 173,415.30 × 71,955.13 - Step 4: Simplify right side
125,699.05x = 12,478,120,455.49 - Step 5: Solve for x
x = 12,478,120,455.49/125,699.05 - Step 6: Final answer
x = 99,269.81
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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.