Finding the Fourth Proportional to 143,357.82, 197,879.93 and 86,816.58
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Solution
The fourth proportional to 143,357.82, 197,879.93 and 86,816.58 is: 119,834.82
Step by Step Solution
- Step 1: Write the proportion equation
143,357.82 : 197,879.93 = 86,816.58 : x - Step 2: Convert to fraction form
143,357.82/197,879.93 = 86,816.58/x - Step 3: Cross multiply
143,357.82x = 197,879.93 × 86,816.58 - Step 4: Simplify right side
143,357.82x = 17,179,258,773.24 - Step 5: Solve for x
x = 17,179,258,773.24/143,357.82 - Step 6: Final answer
x = 119,834.82
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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.