Finding the Fourth Proportional to 156,240.68, 215,612.15 and 84,620.88
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Solution
The fourth proportional to 156,240.68, 215,612.15 and 84,620.88 is: 116,776.82
Step by Step Solution
- Step 1: Write the proportion equation
156,240.68 : 215,612.15 = 84,620.88 : x - Step 2: Convert to fraction form
156,240.68/215,612.15 = 84,620.88/x - Step 3: Cross multiply
156,240.68x = 215,612.15 × 84,620.88 - Step 4: Simplify right side
156,240.68x = 18,245,289,448.59 - Step 5: Solve for x
x = 18,245,289,448.59/156,240.68 - Step 6: Final answer
x = 116,776.82
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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.