Finding the Fourth Proportional to 101,657.36, 139,997.16 and 91,499.28
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Solution
The fourth proportional to 101,657.36, 139,997.16 and 91,499.28 is: 126,007.99
Step by Step Solution
- Step 1: Write the proportion equation
101,657.36 : 139,997.16 = 91,499.28 : x - Step 2: Convert to fraction form
101,657.36/139,997.16 = 91,499.28/x - Step 3: Cross multiply
101,657.36x = 139,997.16 × 91,499.28 - Step 4: Simplify right side
101,657.36x = 12,809,639,342.04 - Step 5: Solve for x
x = 12,809,639,342.04/101,657.36 - Step 6: Final answer
x = 126,007.99
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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.