Finding the Fourth Proportional to 168,617.68, 253,130.28 and 78,745.84
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Solution
The fourth proportional to 168,617.68, 253,130.28 and 78,745.84 is: 118,213.92
Step by Step Solution
- Step 1: Write the proportion equation
168,617.68 : 253,130.28 = 78,745.84 : x - Step 2: Convert to fraction form
168,617.68/253,130.28 = 78,745.84/x - Step 3: Cross multiply
168,617.68x = 253,130.28 × 78,745.84 - Step 4: Simplify right side
168,617.68x = 19,932,956,528.04 - Step 5: Solve for x
x = 19,932,956,528.04/168,617.68 - Step 6: Final answer
x = 118,213.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.