Finding the Fourth Proportional to 155,789.18, 214,989.18 and 84,169.18
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Solution
The fourth proportional to 155,789.18, 214,989.18 and 84,169.18 is: 116,153.53
Step by Step Solution
- Step 1: Write the proportion equation
155,789.18 : 214,989.18 = 84,169.18 : x - Step 2: Convert to fraction form
155,789.18/214,989.18 = 84,169.18/x - Step 3: Cross multiply
155,789.18x = 214,989.18 × 84,169.18 - Step 4: Simplify right side
155,789.18x = 18,095,462,942.57 - Step 5: Solve for x
x = 18,095,462,942.57/155,789.18 - Step 6: Final answer
x = 116,153.53
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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.