Finding the Fourth Proportional to 153,717.08, 212,130.77 and 85,738.37
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Solution
The fourth proportional to 153,717.08, 212,130.77 and 85,738.37 is: 118,319.61
Step by Step Solution
- Step 1: Write the proportion equation
153,717.08 : 212,130.77 = 85,738.37 : x - Step 2: Convert to fraction form
153,717.08/212,130.77 = 85,738.37/x - Step 3: Cross multiply
153,717.08x = 212,130.77 × 85,738.37 - Step 4: Simplify right side
153,717.08x = 18,187,744,957.30 - Step 5: Solve for x
x = 18,187,744,957.30/153,717.08 - Step 6: Final answer
x = 118,319.61
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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.