Finding the Fourth Proportional to 149,064.10, 205,689.74 and 100,771.07
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Solution
The fourth proportional to 149,064.10, 205,689.74 and 100,771.07 is: 139,051.43
Step by Step Solution
- Step 1: Write the proportion equation
149,064.10 : 205,689.74 = 100,771.07 : x - Step 2: Convert to fraction form
149,064.10/205,689.74 = 100,771.07/x - Step 3: Cross multiply
149,064.10x = 205,689.74 × 100,771.07 - Step 4: Simplify right side
149,064.10x = 20,727,575,702.05 - Step 5: Solve for x
x = 20,727,575,702.05/149,064.10 - Step 6: Final answer
x = 139,051.43
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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.