Finding the Fourth Proportional to 149,242.44, 205,947.68 and 81,259.21
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Solution
The fourth proportional to 149,242.44, 205,947.68 and 81,259.21 is: 112,133.95
Step by Step Solution
- Step 1: Write the proportion equation
149,242.44 : 205,947.68 = 81,259.21 : x - Step 2: Convert to fraction form
149,242.44/205,947.68 = 81,259.21/x - Step 3: Cross multiply
149,242.44x = 205,947.68 × 81,259.21 - Step 4: Simplify right side
149,242.44x = 16,735,144,856.97 - Step 5: Solve for x
x = 16,735,144,856.97/149,242.44 - Step 6: Final answer
x = 112,133.95
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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.