Finding the Fourth Proportional to 149,370.36, 206,128.49 and 81,387.90
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Solution
The fourth proportional to 149,370.36, 206,128.49 and 81,387.90 is: 112,313.88
Step by Step Solution
- Step 1: Write the proportion equation
149,370.36 : 206,128.49 = 81,387.90 : x - Step 2: Convert to fraction form
149,370.36/206,128.49 = 81,387.90/x - Step 3: Cross multiply
149,370.36x = 206,128.49 × 81,387.90 - Step 4: Simplify right side
149,370.36x = 16,776,364,931.27 - Step 5: Solve for x
x = 16,776,364,931.27/149,370.36 - Step 6: Final answer
x = 112,313.88
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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.