Finding the Fourth Proportional to 103,642.99, 142,976.58 and 63,286.91
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Solution
The fourth proportional to 103,642.99, 142,976.58 and 63,286.91 is: 87,304.95
Step by Step Solution
- Step 1: Write the proportion equation
103,642.99 : 142,976.58 = 63,286.91 : x - Step 2: Convert to fraction form
103,642.99/142,976.58 = 63,286.91/x - Step 3: Cross multiply
103,642.99x = 142,976.58 × 63,286.91 - Step 4: Simplify right side
103,642.99x = 9,048,546,338.76 - Step 5: Solve for x
x = 9,048,546,338.76/103,642.99 - Step 6: Final answer
x = 87,304.95
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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.