Finding the Fourth Proportional to 120,446.97, 166,294.80 and 77,445.75
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Solution
The fourth proportional to 120,446.97, 166,294.80 and 77,445.75 is: 106,925.28
Step by Step Solution
- Step 1: Write the proportion equation
120,446.97 : 166,294.80 = 77,445.75 : x - Step 2: Convert to fraction form
120,446.97/166,294.80 = 77,445.75/x - Step 3: Cross multiply
120,446.97x = 166,294.80 × 77,445.75 - Step 4: Simplify right side
120,446.97x = 12,878,825,507.10 - Step 5: Solve for x
x = 12,878,825,507.10/120,446.97 - Step 6: Final answer
x = 106,925.28
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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.