Finding the Fourth Proportional to 129,284.40, 178,410.36 and 71,923.08
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Solution
The fourth proportional to 129,284.40, 178,410.36 and 71,923.08 is: 99,252.68
Step by Step Solution
- Step 1: Write the proportion equation
129,284.40 : 178,410.36 = 71,923.08 : x - Step 2: Convert to fraction form
129,284.40/178,410.36 = 71,923.08/x - Step 3: Cross multiply
129,284.40x = 178,410.36 × 71,923.08 - Step 4: Simplify right side
129,284.40x = 12,831,822,595.11 - Step 5: Solve for x
x = 12,831,822,595.11/129,284.40 - Step 6: Final answer
x = 99,252.68
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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.