Finding the Fourth Proportional to 103,895.71, 143,309.60 and 72,052.99
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Solution
The fourth proportional to 103,895.71, 143,309.60 and 72,052.99 is: 99,387.02
Step by Step Solution
- Step 1: Write the proportion equation
103,895.71 : 143,309.60 = 72,052.99 : x - Step 2: Convert to fraction form
103,895.71/143,309.60 = 72,052.99/x - Step 3: Cross multiply
103,895.71x = 143,309.60 × 72,052.99 - Step 4: Simplify right side
103,895.71x = 10,325,884,815.44 - Step 5: Solve for x
x = 10,325,884,815.44/103,895.71 - Step 6: Final answer
x = 99,387.02
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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.