Finding the Fourth Proportional to 128,829.06, 177,694.14 and 124,493.94
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Solution
The fourth proportional to 128,829.06, 177,694.14 and 124,493.94 is: 171,714.70
Step by Step Solution
- Step 1: Write the proportion equation
128,829.06 : 177,694.14 = 124,493.94 : x - Step 2: Convert to fraction form
128,829.06/177,694.14 = 124,493.94/x - Step 3: Cross multiply
128,829.06x = 177,694.14 × 124,493.94 - Step 4: Simplify right side
128,829.06x = 22,121,843,603.51 - Step 5: Solve for x
x = 22,121,843,603.51/128,829.06 - Step 6: Final answer
x = 171,714.70
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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.