Finding the Fourth Proportional to 120,617.02, 180,630.16 and 84,990.79
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Solution
The fourth proportional to 120,617.02, 180,630.16 and 84,990.79 is: 127,278.06
Step by Step Solution
- Step 1: Write the proportion equation
120,617.02 : 180,630.16 = 84,990.79 : x - Step 2: Convert to fraction form
120,617.02/180,630.16 = 84,990.79/x - Step 3: Cross multiply
120,617.02x = 180,630.16 × 84,990.79 - Step 4: Simplify right side
120,617.02x = 15,351,899,996.23 - Step 5: Solve for x
x = 15,351,899,996.23/120,617.02 - Step 6: Final answer
x = 127,278.06
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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.