Finding the Fourth Proportional to 158,539.62, 218,778.86 and 86,918.08
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Solution
The fourth proportional to 158,539.62, 218,778.86 and 86,918.08 is: 119,943.76
Step by Step Solution
- Step 1: Write the proportion equation
158,539.62 : 218,778.86 = 86,918.08 : x - Step 2: Convert to fraction form
158,539.62/218,778.86 = 86,918.08/x - Step 3: Cross multiply
158,539.62x = 218,778.86 × 86,918.08 - Step 4: Simplify right side
158,539.62x = 19,015,838,455.79 - Step 5: Solve for x
x = 19,015,838,455.79/158,539.62 - Step 6: Final answer
x = 119,943.76
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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.