Finding the Fourth Proportional to 142,818.96, 197,179.74 and 91,920.09
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Solution
The fourth proportional to 142,818.96, 197,179.74 and 91,920.09 is: 126,907.38
Step by Step Solution
- Step 1: Write the proportion equation
142,818.96 : 197,179.74 = 91,920.09 : x - Step 2: Convert to fraction form
142,818.96/197,179.74 = 91,920.09/x - Step 3: Cross multiply
142,818.96x = 197,179.74 × 91,920.09 - Step 4: Simplify right side
142,818.96x = 18,124,779,446.98 - Step 5: Solve for x
x = 18,124,779,446.98/142,818.96 - Step 6: Final answer
x = 126,907.38
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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.