Finding the Fourth Proportional to 155,951.07, 215,207.62 and 87,967.05
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Solution
The fourth proportional to 155,951.07, 215,207.62 and 87,967.05 is: 121,391.79
Step by Step Solution
- Step 1: Write the proportion equation
155,951.07 : 215,207.62 = 87,967.05 : x - Step 2: Convert to fraction form
155,951.07/215,207.62 = 87,967.05/x - Step 3: Cross multiply
155,951.07x = 215,207.62 × 87,967.05 - Step 4: Simplify right side
155,951.07x = 18,931,179,468.92 - Step 5: Solve for x
x = 18,931,179,468.92/155,951.07 - Step 6: Final answer
x = 121,391.79
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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.