Finding the Fourth Proportional to 143,190.05, 197,511.50 and 87,975.19
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Solution
The fourth proportional to 143,190.05, 197,511.50 and 87,975.19 is: 121,349.98
Step by Step Solution
- Step 1: Write the proportion equation
143,190.05 : 197,511.50 = 87,975.19 : x - Step 2: Convert to fraction form
143,190.05/197,511.50 = 87,975.19/x - Step 3: Cross multiply
143,190.05x = 197,511.50 × 87,975.19 - Step 4: Simplify right side
143,190.05x = 17,376,110,312.25 - Step 5: Solve for x
x = 17,376,110,312.25/143,190.05 - Step 6: Final answer
x = 121,349.98
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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.