Finding the Fourth Proportional to 145,823.63, 201,236.60 and 78,755.63
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Solution
The fourth proportional to 145,823.63, 201,236.60 and 78,755.63 is: 108,682.76
Step by Step Solution
- Step 1: Write the proportion equation
145,823.63 : 201,236.60 = 78,755.63 : x - Step 2: Convert to fraction form
145,823.63/201,236.60 = 78,755.63/x - Step 3: Cross multiply
145,823.63x = 201,236.60 × 78,755.63 - Step 4: Simplify right side
145,823.63x = 15,848,514,402.76 - Step 5: Solve for x
x = 15,848,514,402.76/145,823.63 - Step 6: Final answer
x = 108,682.76
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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.