Finding the Fourth Proportional to 128,455.14, 177,268.41 and 71,098.41
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Solution
The fourth proportional to 128,455.14, 177,268.41 and 71,098.41 is: 98,115.98
Step by Step Solution
- Step 1: Write the proportion equation
128,455.14 : 177,268.41 = 71,098.41 : x - Step 2: Convert to fraction form
128,455.14/177,268.41 = 71,098.41/x - Step 3: Cross multiply
128,455.14x = 177,268.41 × 71,098.41 - Step 4: Simplify right side
128,455.14x = 12,603,502,094.23 - Step 5: Solve for x
x = 12,603,502,094.23/128,455.14 - Step 6: Final answer
x = 98,115.98
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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.