Finding the Fourth Proportional to 128,416.19, 177,383.66 and 98,570.31
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Solution
The fourth proportional to 128,416.19, 177,383.66 and 98,570.31 is: 136,157.00
Step by Step Solution
- Step 1: Write the proportion equation
128,416.19 : 177,383.66 = 98,570.31 : x - Step 2: Convert to fraction form
128,416.19/177,383.66 = 98,570.31/x - Step 3: Cross multiply
128,416.19x = 177,383.66 × 98,570.31 - Step 4: Simplify right side
128,416.19x = 17,484,761,862.28 - Step 5: Solve for x
x = 17,484,761,862.28/128,416.19 - Step 6: Final answer
x = 136,157.00
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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.