Finding the Fourth Proportional to 159,722.21, 239,379.81 and 84,878.21
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Solution
The fourth proportional to 159,722.21, 239,379.81 and 84,878.21 is: 127,209.17
Step by Step Solution
- Step 1: Write the proportion equation
159,722.21 : 239,379.81 = 84,878.21 : x - Step 2: Convert to fraction form
159,722.21/239,379.81 = 84,878.21/x - Step 3: Cross multiply
159,722.21x = 239,379.81 × 84,878.21 - Step 4: Simplify right side
159,722.21x = 20,318,130,063.10 - Step 5: Solve for x
x = 20,318,130,063.10/159,722.21 - Step 6: Final answer
x = 127,209.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.