Finding the Fourth Proportional to 149,728.40, 206,457.36 and 102,009.68
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Solution
The fourth proportional to 149,728.40, 206,457.36 and 102,009.68 is: 140,659.01
Step by Step Solution
- Step 1: Write the proportion equation
149,728.40 : 206,457.36 = 102,009.68 : x - Step 2: Convert to fraction form
149,728.40/206,457.36 = 102,009.68/x - Step 3: Cross multiply
149,728.40x = 206,457.36 × 102,009.68 - Step 4: Simplify right side
149,728.40x = 21,060,649,227.24 - Step 5: Solve for x
x = 21,060,649,227.24/149,728.40 - Step 6: Final answer
x = 140,659.01
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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.