Finding the Fourth Proportional to 135,129.16, 202,780.78 and 72,843.08
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Solution
The fourth proportional to 135,129.16, 202,780.78 and 72,843.08 is: 109,311.54
Step by Step Solution
- Step 1: Write the proportion equation
135,129.16 : 202,780.78 = 72,843.08 : x - Step 2: Convert to fraction form
135,129.16/202,780.78 = 72,843.08/x - Step 3: Cross multiply
135,129.16x = 202,780.78 × 72,843.08 - Step 4: Simplify right side
135,129.16x = 14,771,176,580.00 - Step 5: Solve for x
x = 14,771,176,580.00/135,129.16 - Step 6: Final answer
x = 109,311.54
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.