Finding the Fourth Proportional to 103,965.81, 143,472.87 and 56,219.19
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Solution
The fourth proportional to 103,965.81, 143,472.87 and 56,219.19 is: 77,582.51
Step by Step Solution
- Step 1: Write the proportion equation
103,965.81 : 143,472.87 = 56,219.19 : x - Step 2: Convert to fraction form
103,965.81/143,472.87 = 56,219.19/x - Step 3: Cross multiply
103,965.81x = 143,472.87 × 56,219.19 - Step 4: Simplify right side
103,965.81x = 8,065,928,538.38 - Step 5: Solve for x
x = 8,065,928,538.38/103,965.81 - Step 6: Final answer
x = 77,582.51
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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.