Finding the Fourth Proportional to 128,303.84, 192,488.57 and 53,399.09
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Solution
The fourth proportional to 128,303.84, 192,488.57 and 53,399.09 is: 80,112.29
Step by Step Solution
- Step 1: Write the proportion equation
128,303.84 : 192,488.57 = 53,399.09 : x - Step 2: Convert to fraction form
128,303.84/192,488.57 = 53,399.09/x - Step 3: Cross multiply
128,303.84x = 192,488.57 × 53,399.09 - Step 4: Simplify right side
128,303.84x = 10,278,714,887.87 - Step 5: Solve for x
x = 10,278,714,887.87/128,303.84 - Step 6: Final answer
x = 80,112.29
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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.