Finding the Fourth Proportional to 150,043.20, 207,079.20 and 86,383.68
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Solution
The fourth proportional to 150,043.20, 207,079.20 and 86,383.68 is: 119,220.75
Step by Step Solution
- Step 1: Write the proportion equation
150,043.20 : 207,079.20 = 86,383.68 : x - Step 2: Convert to fraction form
150,043.20/207,079.20 = 86,383.68/x - Step 3: Cross multiply
150,043.20x = 207,079.20 × 86,383.68 - Step 4: Simplify right side
150,043.20x = 17,888,263,347.46 - Step 5: Solve for x
x = 17,888,263,347.46/150,043.20 - Step 6: Final answer
x = 119,220.75
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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.