Finding the Fourth Proportional to 149,008.99, 205,633.48 and 81,025.48
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Solution
The fourth proportional to 149,008.99, 205,633.48 and 81,025.48 is: 111,815.75
Step by Step Solution
- Step 1: Write the proportion equation
149,008.99 : 205,633.48 = 81,025.48 : x - Step 2: Convert to fraction form
149,008.99/205,633.48 = 81,025.48/x - Step 3: Cross multiply
149,008.99x = 205,633.48 × 81,025.48 - Step 4: Simplify right side
149,008.99x = 16,661,551,421.07 - Step 5: Solve for x
x = 16,661,551,421.07/149,008.99 - Step 6: Final answer
x = 111,815.75
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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.