Finding the Fourth Proportional to 128,634.21, 177,509.21 and 70,487.96
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Solution
The fourth proportional to 128,634.21, 177,509.21 and 70,487.96 is: 97,270.09
Step by Step Solution
- Step 1: Write the proportion equation
128,634.21 : 177,509.21 = 70,487.96 : x - Step 2: Convert to fraction form
128,634.21/177,509.21 = 70,487.96/x - Step 3: Cross multiply
128,634.21x = 177,509.21 × 70,487.96 - Step 4: Simplify right side
128,634.21x = 12,512,260,854.13 - Step 5: Solve for x
x = 12,512,260,854.13/128,634.21 - Step 6: Final answer
x = 97,270.09
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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.