Finding the Fourth Proportional to 134,720.70, 202,081.05 and 84,857.10
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Solution
The fourth proportional to 134,720.70, 202,081.05 and 84,857.10 is: 127,285.65
Step by Step Solution
- Step 1: Write the proportion equation
134,720.70 : 202,081.05 = 84,857.10 : x - Step 2: Convert to fraction form
134,720.70/202,081.05 = 84,857.10/x - Step 3: Cross multiply
134,720.70x = 202,081.05 × 84,857.10 - Step 4: Simplify right side
134,720.70x = 17,148,011,867.96 - Step 5: Solve for x
x = 17,148,011,867.96/134,720.70 - Step 6: Final answer
x = 127,285.65
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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.