Finding the Fourth Proportional to 126,784.32, 174,961.75 and 68,641.09
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Solution
The fourth proportional to 126,784.32, 174,961.75 and 68,641.09 is: 94,724.37
Step by Step Solution
- Step 1: Write the proportion equation
126,784.32 : 174,961.75 = 68,641.09 : x - Step 2: Convert to fraction form
126,784.32/174,961.75 = 68,641.09/x - Step 3: Cross multiply
126,784.32x = 174,961.75 × 68,641.09 - Step 4: Simplify right side
126,784.32x = 12,009,565,228.31 - Step 5: Solve for x
x = 12,009,565,228.31/126,784.32 - Step 6: Final answer
x = 94,724.37
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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.