Finding the Fourth Proportional to 128,961.99, 193,583.12 and 109,064.14
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Solution
The fourth proportional to 128,961.99, 193,583.12 and 109,064.14 is: 163,714.72
Step by Step Solution
- Step 1: Write the proportion equation
128,961.99 : 193,583.12 = 109,064.14 : x - Step 2: Convert to fraction form
128,961.99/193,583.12 = 109,064.14/x - Step 3: Cross multiply
128,961.99x = 193,583.12 × 109,064.14 - Step 4: Simplify right side
128,961.99x = 21,112,975,472.04 - Step 5: Solve for x
x = 21,112,975,472.04/128,961.99 - Step 6: Final answer
x = 163,714.72
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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.