Finding the Fourth Proportional to 143,090.24, 197,475.36 and 79,440.32
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Solution
The fourth proportional to 143,090.24, 197,475.36 and 79,440.32 is: 109,633.65
Step by Step Solution
- Step 1: Write the proportion equation
143,090.24 : 197,475.36 = 79,440.32 : x - Step 2: Convert to fraction form
143,090.24/197,475.36 = 79,440.32/x - Step 3: Cross multiply
143,090.24x = 197,475.36 × 79,440.32 - Step 4: Simplify right side
143,090.24x = 15,687,505,790.52 - Step 5: Solve for x
x = 15,687,505,790.52/143,090.24 - Step 6: Final answer
x = 109,633.65
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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.