Finding the Fourth Proportional to 199,929.12, 299,745.52 and 121,024.68
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Solution
The fourth proportional to 199,929.12, 299,745.52 and 121,024.68 is: 181,447.33
Step by Step Solution
- Step 1: Write the proportion equation
199,929.12 : 299,745.52 = 121,024.68 : x - Step 2: Convert to fraction form
199,929.12/299,745.52 = 121,024.68/x - Step 3: Cross multiply
199,929.12x = 299,745.52 × 121,024.68 - Step 4: Simplify right side
199,929.12x = 36,276,605,639.43 - Step 5: Solve for x
x = 36,276,605,639.43/199,929.12 - Step 6: Final answer
x = 181,447.33
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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.