Finding the Fourth Proportional to 128,599.06, 177,464.77 and 71,238.21
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Solution
The fourth proportional to 128,599.06, 177,464.77 and 71,238.21 is: 98,307.66
Step by Step Solution
- Step 1: Write the proportion equation
128,599.06 : 177,464.77 = 71,238.21 : x - Step 2: Convert to fraction form
128,599.06/177,464.77 = 71,238.21/x - Step 3: Cross multiply
128,599.06x = 177,464.77 × 71,238.21 - Step 4: Simplify right side
128,599.06x = 12,642,271,665.54 - Step 5: Solve for x
x = 12,642,271,665.54/128,599.06 - Step 6: Final answer
x = 98,307.66
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1.5x scale
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.