Finding the Fourth Proportional to 126,728.21, 174,873.08 and 75,730.82
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Solution
The fourth proportional to 126,728.21, 174,873.08 and 75,730.82 is: 104,501.44
Step by Step Solution
- Step 1: Write the proportion equation
126,728.21 : 174,873.08 = 75,730.82 : x - Step 2: Convert to fraction form
126,728.21/174,873.08 = 75,730.82/x - Step 3: Cross multiply
126,728.21x = 174,873.08 × 75,730.82 - Step 4: Simplify right side
126,728.21x = 13,243,280,491.31 - Step 5: Solve for x
x = 13,243,280,491.31/126,728.21 - Step 6: Final answer
x = 104,501.44
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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.