Finding the Fourth Proportional to 201,582.64, 278,090.94 and 129,985.60
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Solution
The fourth proportional to 201,582.64, 278,090.94 and 129,985.60 is: 179,320.09
Step by Step Solution
- Step 1: Write the proportion equation
201,582.64 : 278,090.94 = 129,985.60 : x - Step 2: Convert to fraction form
201,582.64/278,090.94 = 129,985.60/x - Step 3: Cross multiply
201,582.64x = 278,090.94 × 129,985.60 - Step 4: Simplify right side
201,582.64x = 36,147,817,690.46 - Step 5: Solve for x
x = 36,147,817,690.46/201,582.64 - Step 6: Final answer
x = 179,320.09
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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.