Finding the Fourth Proportional to 159,871.60, 239,893.80 and 71,138.80
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Solution
The fourth proportional to 159,871.60, 239,893.80 and 71,138.80 is: 106,746.65
Step by Step Solution
- Step 1: Write the proportion equation
159,871.60 : 239,893.80 = 71,138.80 : x - Step 2: Convert to fraction form
159,871.60/239,893.80 = 71,138.80/x - Step 3: Cross multiply
159,871.60x = 239,893.80 × 71,138.80 - Step 4: Simplify right side
159,871.60x = 17,065,757,059.44 - Step 5: Solve for x
x = 17,065,757,059.44/159,871.60 - Step 6: Final answer
x = 106,746.65
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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.