Finding the Fourth Proportional to 145,905.74, 201,349.92 and 78,837.74
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Solution
The fourth proportional to 145,905.74, 201,349.92 and 78,837.74 is: 108,796.08
Step by Step Solution
- Step 1: Write the proportion equation
145,905.74 : 201,349.92 = 78,837.74 : x - Step 2: Convert to fraction form
145,905.74/201,349.92 = 78,837.74/x - Step 3: Cross multiply
145,905.74x = 201,349.92 × 78,837.74 - Step 4: Simplify right side
145,905.74x = 15,873,972,390.29 - Step 5: Solve for x
x = 15,873,972,390.29/145,905.74 - Step 6: Final answer
x = 108,796.08
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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.