Finding the Fourth Proportional to 156,245.67, 215,618.91 and 84,625.65
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Solution
The fourth proportional to 156,245.67, 215,618.91 and 84,625.65 is: 116,783.33
Step by Step Solution
- Step 1: Write the proportion equation
156,245.67 : 215,618.91 = 84,625.65 : x - Step 2: Convert to fraction form
156,245.67/215,618.91 = 84,625.65/x - Step 3: Cross multiply
156,245.67x = 215,618.91 × 84,625.65 - Step 4: Simplify right side
156,245.67x = 18,246,890,411.04 - Step 5: Solve for x
x = 18,246,890,411.04/156,245.67 - Step 6: Final answer
x = 116,783.33
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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.