Finding the Fourth Proportional to 103,620.45, 155,430.63 and 68,551.95
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Solution
The fourth proportional to 103,620.45, 155,430.63 and 68,551.95 is: 102,827.90
Step by Step Solution
- Step 1: Write the proportion equation
103,620.45 : 155,430.63 = 68,551.95 : x - Step 2: Convert to fraction form
103,620.45/155,430.63 = 68,551.95/x - Step 3: Cross multiply
103,620.45x = 155,430.63 × 68,551.95 - Step 4: Simplify right side
103,620.45x = 10,655,072,776.23 - Step 5: Solve for x
x = 10,655,072,776.23/103,620.45 - Step 6: Final answer
x = 102,827.90
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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.