Finding the Fourth Proportional to 149,259.38, 205,974.99 and 81,277.18
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Solution
The fourth proportional to 149,259.38, 205,974.99 and 81,277.18 is: 112,160.90
Step by Step Solution
- Step 1: Write the proportion equation
149,259.38 : 205,974.99 = 81,277.18 : x - Step 2: Convert to fraction form
149,259.38/205,974.99 = 81,277.18/x - Step 3: Cross multiply
149,259.38x = 205,974.99 × 81,277.18 - Step 4: Simplify right side
149,259.38x = 16,741,065,822.79 - Step 5: Solve for x
x = 16,741,065,822.79/149,259.38 - Step 6: Final answer
x = 112,160.90
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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.