Finding the Fourth Proportional to 125,420.87, 173,069.26 and 74,424.76
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Solution
The fourth proportional to 125,420.87, 173,069.26 and 74,424.76 is: 102,699.31
Step by Step Solution
- Step 1: Write the proportion equation
125,420.87 : 173,069.26 = 74,424.76 : x - Step 2: Convert to fraction form
125,420.87/173,069.26 = 74,424.76/x - Step 3: Cross multiply
125,420.87x = 173,069.26 × 74,424.76 - Step 4: Simplify right side
125,420.87x = 12,880,637,520.14 - Step 5: Solve for x
x = 12,880,637,520.14/125,420.87 - Step 6: Final answer
x = 102,699.31
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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.