Finding the Fourth Proportional to 128,610.81, 177,480.99 and 71,250.01
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Solution
The fourth proportional to 128,610.81, 177,480.99 and 71,250.01 is: 98,323.95
Step by Step Solution
- Step 1: Write the proportion equation
128,610.81 : 177,480.99 = 71,250.01 : x - Step 2: Convert to fraction form
128,610.81/177,480.99 = 71,250.01/x - Step 3: Cross multiply
128,610.81x = 177,480.99 × 71,250.01 - Step 4: Simplify right side
128,610.81x = 12,645,522,312.31 - Step 5: Solve for x
x = 12,645,522,312.31/128,610.81 - Step 6: Final answer
x = 98,323.95
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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.