Finding the Fourth Proportional to 140,246.98, 193,557.42 and 78,995.17
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Solution
The fourth proportional to 140,246.98, 193,557.42 and 78,995.17 is: 109,022.68
Step by Step Solution
- Step 1: Write the proportion equation
140,246.98 : 193,557.42 = 78,995.17 : x - Step 2: Convert to fraction form
140,246.98/193,557.42 = 78,995.17/x - Step 3: Cross multiply
140,246.98x = 193,557.42 × 78,995.17 - Step 4: Simplify right side
140,246.98x = 15,290,101,297.66 - Step 5: Solve for x
x = 15,290,101,297.66/140,246.98 - Step 6: Final answer
x = 109,022.68
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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.