Finding the Fourth Proportional to 153,876.80, 230,815.20 and 87,291.20
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Solution
The fourth proportional to 153,876.80, 230,815.20 and 87,291.20 is: 130,936.80
Step by Step Solution
- Step 1: Write the proportion equation
153,876.80 : 230,815.20 = 87,291.20 : x - Step 2: Convert to fraction form
153,876.80/230,815.20 = 87,291.20/x - Step 3: Cross multiply
153,876.80x = 230,815.20 × 87,291.20 - Step 4: Simplify right side
153,876.80x = 20,148,135,786.24 - Step 5: Solve for x
x = 20,148,135,786.24/153,876.80 - Step 6: Final answer
x = 130,936.80
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1.5x scale
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.