Finding the Fourth Proportional to 158,956.40, 219,363.46 and 87,331.88
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Solution
The fourth proportional to 158,956.40, 219,363.46 and 87,331.88 is: 120,519.99
Step by Step Solution
- Step 1: Write the proportion equation
158,956.40 : 219,363.46 = 87,331.88 : x - Step 2: Convert to fraction form
158,956.40/219,363.46 = 87,331.88/x - Step 3: Cross multiply
158,956.40x = 219,363.46 × 87,331.88 - Step 4: Simplify right side
158,956.40x = 19,157,423,365.10 - Step 5: Solve for x
x = 19,157,423,365.10/158,956.40 - Step 6: Final answer
x = 120,519.99
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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.