Finding the Fourth Proportional to 126,727.64, 190,155.95 and 79,334.63
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Solution
The fourth proportional to 126,727.64, 190,155.95 and 79,334.63 is: 119,042.32
Step by Step Solution
- Step 1: Write the proportion equation
126,727.64 : 190,155.95 = 79,334.63 : x - Step 2: Convert to fraction form
126,727.64/190,155.95 = 79,334.63/x - Step 3: Cross multiply
126,727.64x = 190,155.95 × 79,334.63 - Step 4: Simplify right side
126,727.64x = 15,085,951,935.55 - Step 5: Solve for x
x = 15,085,951,935.55/126,727.64 - Step 6: Final answer
x = 119,042.32
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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.