Finding the Fourth Proportional to 101,231.87, 139,700.57 and 55,908.99
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Solution
The fourth proportional to 101,231.87, 139,700.57 and 55,908.99 is: 77,154.73
Step by Step Solution
- Step 1: Write the proportion equation
101,231.87 : 139,700.57 = 55,908.99 : x - Step 2: Convert to fraction form
101,231.87/139,700.57 = 55,908.99/x - Step 3: Cross multiply
101,231.87x = 139,700.57 × 55,908.99 - Step 4: Simplify right side
101,231.87x = 7,810,517,491.58 - Step 5: Solve for x
x = 7,810,517,491.58/101,231.87 - Step 6: Final answer
x = 77,154.73
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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.