Finding the Fourth Proportional to 130,972.68, 180,742.32 and 74,383.92
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Solution
The fourth proportional to 130,972.68, 180,742.32 and 74,383.92 is: 102,649.82
Step by Step Solution
- Step 1: Write the proportion equation
130,972.68 : 180,742.32 = 74,383.92 : x - Step 2: Convert to fraction form
130,972.68/180,742.32 = 74,383.92/x - Step 3: Cross multiply
130,972.68x = 180,742.32 × 74,383.92 - Step 4: Simplify right side
130,972.68x = 13,444,322,271.49 - Step 5: Solve for x
x = 13,444,322,271.49/130,972.68 - Step 6: Final answer
x = 102,649.82
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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.