Finding the Fourth Proportional to 128,122.44, 176,795.49 and 74,396.94
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Solution
The fourth proportional to 128,122.44, 176,795.49 and 74,396.94 is: 102,659.95
Step by Step Solution
- Step 1: Write the proportion equation
128,122.44 : 176,795.49 = 74,396.94 : x - Step 2: Convert to fraction form
128,122.44/176,795.49 = 74,396.94/x - Step 3: Cross multiply
128,122.44x = 176,795.49 × 74,396.94 - Step 4: Simplify right side
128,122.44x = 13,153,043,461.80 - Step 5: Solve for x
x = 13,153,043,461.80/128,122.44 - Step 6: Final answer
x = 102,659.95
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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.