Finding the Fourth Proportional to 105,018.99, 157,481.10 and 30,121.95
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Solution
The fourth proportional to 105,018.99, 157,481.10 and 30,121.95 is: 45,169.33
Step by Step Solution
- Step 1: Write the proportion equation
105,018.99 : 157,481.10 = 30,121.95 : x - Step 2: Convert to fraction form
105,018.99/157,481.10 = 30,121.95/x - Step 3: Cross multiply
105,018.99x = 157,481.10 × 30,121.95 - Step 4: Simplify right side
105,018.99x = 4,743,637,820.15 - Step 5: Solve for x
x = 4,743,637,820.15/105,018.99 - Step 6: Final answer
x = 45,169.33
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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.