Finding the Fourth Proportional to 149,292.21, 206,024.58 and 81,309.48
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Solution
The fourth proportional to 149,292.21, 206,024.58 and 81,309.48 is: 112,207.81
Step by Step Solution
- Step 1: Write the proportion equation
149,292.21 : 206,024.58 = 81,309.48 : x - Step 2: Convert to fraction form
149,292.21/206,024.58 = 81,309.48/x - Step 3: Cross multiply
149,292.21x = 206,024.58 × 81,309.48 - Step 4: Simplify right side
149,292.21x = 16,751,751,800.01 - Step 5: Solve for x
x = 16,751,751,800.01/149,292.21 - Step 6: Final answer
x = 112,207.81
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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.