Finding the Fourth Proportional to 105,424.16, 158,198.62 and 38,910.62
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Solution
The fourth proportional to 105,424.16, 158,198.62 and 38,910.62 is: 58,388.95
Step by Step Solution
- Step 1: Write the proportion equation
105,424.16 : 158,198.62 = 38,910.62 : x - Step 2: Convert to fraction form
105,424.16/158,198.62 = 38,910.62/x - Step 3: Cross multiply
105,424.16x = 158,198.62 × 38,910.62 - Step 4: Simplify right side
105,424.16x = 6,155,606,387.34 - Step 5: Solve for x
x = 6,155,606,387.34/105,424.16 - Step 6: Final answer
x = 58,388.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.