Finding the Fourth Proportional to 102,173.19, 140,986.62 and 56,840.46
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Solution
The fourth proportional to 102,173.19, 140,986.62 and 56,840.46 is: 78,432.95
Step by Step Solution
- Step 1: Write the proportion equation
102,173.19 : 140,986.62 = 56,840.46 : x - Step 2: Convert to fraction form
102,173.19/140,986.62 = 56,840.46/x - Step 3: Cross multiply
102,173.19x = 140,986.62 × 56,840.46 - Step 4: Simplify right side
102,173.19x = 8,013,744,334.65 - Step 5: Solve for x
x = 8,013,744,334.65/102,173.19 - Step 6: Final answer
x = 78,432.95
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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.