Finding the Fourth Proportional to 126,921.55, 175,153.99 and 69,557.05
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Solution
The fourth proportional to 126,921.55, 175,153.99 and 69,557.05 is: 95,989.96
Step by Step Solution
- Step 1: Write the proportion equation
126,921.55 : 175,153.99 = 69,557.05 : x - Step 2: Convert to fraction form
126,921.55/175,153.99 = 69,557.05/x - Step 3: Cross multiply
126,921.55x = 175,153.99 × 69,557.05 - Step 4: Simplify right side
126,921.55x = 12,183,195,015.60 - Step 5: Solve for x
x = 12,183,195,015.60/126,921.55 - Step 6: Final answer
x = 95,989.96
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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.