Finding the Fourth Proportional to 126,335.61, 174,353.81 and 72,639.09
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Solution
The fourth proportional to 126,335.61, 174,353.81 and 72,639.09 is: 100,248.08
Step by Step Solution
- Step 1: Write the proportion equation
126,335.61 : 174,353.81 = 72,639.09 : x - Step 2: Convert to fraction form
126,335.61/174,353.81 = 72,639.09/x - Step 3: Cross multiply
126,335.61x = 174,353.81 × 72,639.09 - Step 4: Simplify right side
126,335.61x = 12,664,901,733.24 - Step 5: Solve for x
x = 12,664,901,733.24/126,335.61 - Step 6: Final answer
x = 100,248.08
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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.