Finding the Fourth Proportional to 107,965.76, 161,896.64 and 61,206.08
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Solution
The fourth proportional to 107,965.76, 161,896.64 and 61,206.08 is: 91,779.64
Step by Step Solution
- Step 1: Write the proportion equation
107,965.76 : 161,896.64 = 61,206.08 : x - Step 2: Convert to fraction form
107,965.76/161,896.64 = 61,206.08/x - Step 3: Cross multiply
107,965.76x = 161,896.64 × 61,206.08 - Step 4: Simplify right side
107,965.76x = 9,909,058,699.57 - Step 5: Solve for x
x = 9,909,058,699.57/107,965.76 - Step 6: Final answer
x = 91,779.64
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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.