Finding the Fourth Proportional to 128,600.56, 177,466.84 and 71,239.70
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Solution
The fourth proportional to 128,600.56, 177,466.84 and 71,239.70 is: 98,309.72
Step by Step Solution
- Step 1: Write the proportion equation
128,600.56 : 177,466.84 = 71,239.70 : x - Step 2: Convert to fraction form
128,600.56/177,466.84 = 71,239.70/x - Step 3: Cross multiply
128,600.56x = 177,466.84 × 71,239.70 - Step 4: Simplify right side
128,600.56x = 12,642,684,441.55 - Step 5: Solve for x
x = 12,642,684,441.55/128,600.56 - Step 6: Final answer
x = 98,309.72
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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.