Finding the Fourth Proportional to 145,699.20, 201,080.88 and 91,981.44
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Solution
The fourth proportional to 145,699.20, 201,080.88 and 91,981.44 is: 126,944.48
Step by Step Solution
- Step 1: Write the proportion equation
145,699.20 : 201,080.88 = 91,981.44 : x - Step 2: Convert to fraction form
145,699.20/201,080.88 = 91,981.44/x - Step 3: Cross multiply
145,699.20x = 201,080.88 × 91,981.44 - Step 4: Simplify right side
145,699.20x = 18,495,708,898.87 - Step 5: Solve for x
x = 18,495,708,898.87/145,699.20 - Step 6: Final answer
x = 126,944.48
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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.