Finding the Fourth Proportional to 100,904.44, 139,246.84 and 55,581.52
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Solution
The fourth proportional to 100,904.44, 139,246.84 and 55,581.52 is: 76,701.79
Step by Step Solution
- Step 1: Write the proportion equation
100,904.44 : 139,246.84 = 55,581.52 : x - Step 2: Convert to fraction form
100,904.44/139,246.84 = 55,581.52/x - Step 3: Cross multiply
100,904.44x = 139,246.84 × 55,581.52 - Step 4: Simplify right side
100,904.44x = 7,739,551,022.40 - Step 5: Solve for x
x = 7,739,551,022.40/100,904.44 - Step 6: Final answer
x = 76,701.79
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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.