Finding the Fourth Proportional to 128,295.19, 192,617.30 and 72,174.79
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Solution
The fourth proportional to 128,295.19, 192,617.30 and 72,174.79 is: 108,360.37
Step by Step Solution
- Step 1: Write the proportion equation
128,295.19 : 192,617.30 = 72,174.79 : x - Step 2: Convert to fraction form
128,295.19/192,617.30 = 72,174.79/x - Step 3: Cross multiply
128,295.19x = 192,617.30 × 72,174.79 - Step 4: Simplify right side
128,295.19x = 13,902,113,599.08 - Step 5: Solve for x
x = 13,902,113,599.08/128,295.19 - Step 6: Final answer
x = 108,360.37
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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.