Finding the Fourth Proportional to 143,245.53, 197,473.55 and 100,671.93
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Solution
The fourth proportional to 143,245.53, 197,473.55 and 100,671.93 is: 138,782.99
Step by Step Solution
- Step 1: Write the proportion equation
143,245.53 : 197,473.55 = 100,671.93 : x - Step 2: Convert to fraction form
143,245.53/197,473.55 = 100,671.93/x - Step 3: Cross multiply
143,245.53x = 197,473.55 × 100,671.93 - Step 4: Simplify right side
143,245.53x = 19,880,042,899.09 - Step 5: Solve for x
x = 19,880,042,899.09/143,245.53 - Step 6: Final answer
x = 138,782.99
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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.