Finding the Fourth Proportional to 122,803.23, 169,406.43 and 71,782.62
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Solution
The fourth proportional to 122,803.23, 169,406.43 and 71,782.62 is: 99,023.76
Step by Step Solution
- Step 1: Write the proportion equation
122,803.23 : 169,406.43 = 71,782.62 : x - Step 2: Convert to fraction form
122,803.23/169,406.43 = 71,782.62/x - Step 3: Cross multiply
122,803.23x = 169,406.43 × 71,782.62 - Step 4: Simplify right side
122,803.23x = 12,160,437,390.25 - Step 5: Solve for x
x = 12,160,437,390.25/122,803.23 - Step 6: Final answer
x = 99,023.76
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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.