Finding the Fourth Proportional to 138,199.02, 207,298.53 and 76,263.18
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Solution
The fourth proportional to 138,199.02, 207,298.53 and 76,263.18 is: 114,394.77
Step by Step Solution
- Step 1: Write the proportion equation
138,199.02 : 207,298.53 = 76,263.18 : x - Step 2: Convert to fraction form
138,199.02/207,298.53 = 76,263.18/x - Step 3: Cross multiply
138,199.02x = 207,298.53 × 76,263.18 - Step 4: Simplify right side
138,199.02x = 15,809,245,107.13 - Step 5: Solve for x
x = 15,809,245,107.13/138,199.02 - Step 6: Final answer
x = 114,394.77
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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.