Finding the Fourth Proportional to 107,921.12, 149,033.76 and 102,030.80
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Solution
The fourth proportional to 107,921.12, 149,033.76 and 102,030.80 is: 140,899.52
Step by Step Solution
- Step 1: Write the proportion equation
107,921.12 : 149,033.76 = 102,030.80 : x - Step 2: Convert to fraction form
107,921.12/149,033.76 = 102,030.80/x - Step 3: Cross multiply
107,921.12x = 149,033.76 × 102,030.80 - Step 4: Simplify right side
107,921.12x = 15,206,033,759.81 - Step 5: Solve for x
x = 15,206,033,759.81/107,921.12 - Step 6: Final answer
x = 140,899.52
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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.