Finding the Fourth Proportional to 159,781.60, 239,758.80 and 71,048.80
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Solution
The fourth proportional to 159,781.60, 239,758.80 and 71,048.80 is: 106,611.62
Step by Step Solution
- Step 1: Write the proportion equation
159,781.60 : 239,758.80 = 71,048.80 : x - Step 2: Convert to fraction form
159,781.60/239,758.80 = 71,048.80/x - Step 3: Cross multiply
159,781.60x = 239,758.80 × 71,048.80 - Step 4: Simplify right side
159,781.60x = 17,034,575,029.44 - Step 5: Solve for x
x = 17,034,575,029.44/159,781.60 - Step 6: Final answer
x = 106,611.62
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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.