Finding the Fourth Proportional to 134,707.20, 201,798.36 and 81,985.92
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Solution
The fourth proportional to 134,707.20, 201,798.36 and 81,985.92 is: 122,819.15
Step by Step Solution
- Step 1: Write the proportion equation
134,707.20 : 201,798.36 = 81,985.92 : x - Step 2: Convert to fraction form
134,707.20/201,798.36 = 81,985.92/x - Step 3: Cross multiply
134,707.20x = 201,798.36 × 81,985.92 - Step 4: Simplify right side
134,707.20x = 16,544,624,199.09 - Step 5: Solve for x
x = 16,544,624,199.09/134,707.20 - Step 6: Final answer
x = 122,819.15
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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.