Finding the Fourth Proportional to 81,232.70, 121,630.35 and 81,232.70
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Solution
The fourth proportional to 81,232.70, 121,630.35 and 81,232.70 is: 121,630.35
Step by Step Solution
- Step 1: Write the proportion equation
81,232.70 : 121,630.35 = 81,232.70 : x - Step 2: Convert to fraction form
81,232.70/121,630.35 = 81,232.70/x - Step 3: Cross multiply
81,232.70x = 121,630.35 × 81,232.70 - Step 4: Simplify right side
81,232.70x = 9,880,361,732.45 - Step 5: Solve for x
x = 9,880,361,732.45/81,232.70 - Step 6: Final answer
x = 121,630.35
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.