Finding the Fourth Proportional to 103,634.78, 155,451.60 and 89,551.99
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Solution
The fourth proportional to 103,634.78, 155,451.60 and 89,551.99 is: 134,327.49
Step by Step Solution
- Step 1: Write the proportion equation
103,634.78 : 155,451.60 = 89,551.99 : x - Step 2: Convert to fraction form
103,634.78/155,451.60 = 89,551.99/x - Step 3: Cross multiply
103,634.78x = 155,451.60 × 89,551.99 - Step 4: Simplify right side
103,634.78x = 13,920,999,740.06 - Step 5: Solve for x
x = 13,920,999,740.06/103,634.78 - Step 6: Final answer
x = 134,327.49
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1.5x scale
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.