Finding the Fourth Proportional to 136,380.24, 188,173.40 and 78,210.09
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Solution
The fourth proportional to 136,380.24, 188,173.40 and 78,210.09 is: 107,911.95
Step by Step Solution
- Step 1: Write the proportion equation
136,380.24 : 188,173.40 = 78,210.09 : x - Step 2: Convert to fraction form
136,380.24/188,173.40 = 78,210.09/x - Step 3: Cross multiply
136,380.24x = 188,173.40 × 78,210.09 - Step 4: Simplify right side
136,380.24x = 14,717,058,158.56 - Step 5: Solve for x
x = 14,717,058,158.56/136,380.24 - Step 6: Final answer
x = 107,911.95
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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.