Finding the Fourth Proportional to 125,702.62, 173,459.34 and 74,011.54
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Solution
The fourth proportional to 125,702.62, 173,459.34 and 74,011.54 is: 102,129.88
Step by Step Solution
- Step 1: Write the proportion equation
125,702.62 : 173,459.34 = 74,011.54 : x - Step 2: Convert to fraction form
125,702.62/173,459.34 = 74,011.54/x - Step 3: Cross multiply
125,702.62x = 173,459.34 × 74,011.54 - Step 4: Simplify right side
125,702.62x = 12,837,992,880.78 - Step 5: Solve for x
x = 12,837,992,880.78/125,702.62 - Step 6: Final answer
x = 102,129.88
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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.